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D20 1.3inch IPS Color Screen Smart Watch IP67 Waterproof,Support Call Reminder /Heart Rate Monitoring/Blood Pressure Monitoring/Sedentary Reminder(Silver)

About Product 1. Screen size: 1.3 IPS color screen 2. Bluetooth version: BLE 4.03. Battery capacity: 100m. Ah 4. Waterproof rating: IP675. System: Android system 4.4 version or above,iOS system 8.0 version or above 6. Screen resolution: 240*2407. Charging method:USB charging. Function 1. Heart rate monitoring,blood pressure monitoring 2. Standard sport function (step, distance, calories)3. Sleep monitoring (sleep time, sleep quality）4. Multi-sports mode:walking,running,cycling,badminton,climbing 4. Call reminder,message reminder,sedentary reminder,remote camera 5. Alarm clocks,stopwatch,bidirectional anti loss

KS05 1.32 inch IP67 Waterproof Color Screen Smart Watch,Support Blood Oxygen / Blood Glucose / Blood Lipid Monitoring(Silver White)

About Product 1. Battery capacity: 240m. Ah 2. Bluetooth version :BLE 5.13. Charging method:magnetic charging 4. Waterproof rating: IP67 waterproof 5. Resolution:360x 3606. System: Android system 4.4 version or above,iOS system 8.2 version or above 7. APP support languages: Chinese, Traditional, English, Japanese, German, Russian, Italian, French, Spanish, Portuguese, Vietnamese, Korean, Persian (Arabic)8. Watch support languages:Chinese, English, Japanese, French, German, Italian, Spanish, Russian, Portuguese 9. Standby time:about 30 days 10. Use time:about 7-10 days. Function 1. Heart rate monitoring,blood pressure monitoring,blood oxygen monitoring,blood glucose monitoring 2. Step,distance,calorie 3. Sleep monitoring (sleep duration, sleep quality)4. Uric acid measurement,blood lipid monitoring,ECG electrocardiogram,precise body temperature measurement,multi-sport mode 5. Bluetooth call,automatically monitoring of photoelectric blood pressure,heart rate alarm 6. Family and friends remote care,sedentary reminder,raise wrist to brighten the screen,anti-lost reminder 7. Message push,call reminder/reject,music control,remote control camera,alarm clock,rotary encoder

ESCAM PT303 3MP HD Motion Detection APP Control Pan & Tilt WiFi IP Camera(US Plug)

Features:1. H.265 3MP HD, 2304x 1296 resolution .2. Supports audible alarms and can select alarm areas.3. Supports two-way voice.4. Support mobile detection, humanoid detection and tracking, and APP alarm push.5. Pan&Tilt; 355 degrees / 60 degrees.6. Smart dual light source night view, 4pcs infrared lights, 4pcs white LEDs, 20 meters detection distance.7. Support cloud storage and support up to 128G memory card (not included).8. IP66 waterproof. Specifications:1. Compression technology: H.265 compression algorithm, 32. Kbps~2. Mbps 2. Resolution: 2304x 12963. Frame rate: 1-25fps 4. Video standard: PAL5. Signal to Noise Ratio: >=38dB6. CMOS performance: Support automatic white balance, automatic gain control, automatic backlight compensation 7. Lens/viewing angle: Horizontal 355 Degree Viewing Angle, Vertical 65 Degree Viewing Angle, Electronic PTZ Surveillance, 4mm Lens 8. Compression type: Base. Line Profile / Main Profile / High Profile 9. Coding standard: Built-in omnidirectional noise-canceling microphone and speaker, supporting two-way real-time audio transmission. G.711a audio compression standard, adaptive code stream 10. Audio input: 1-way built-in -38dB microphone 11. Audio output: Built-in 1 speaker 8 ohms 1W12. LED lights: White light infrared day and night full color, 4pcs x 850 IR, 4pcs 850 white light 13. Multi-purpose: Humanoid tracking, humanoid detection, motion detection, area detection, area framing, humanoid tagging, voice alerts 14. Power supply: DC 5V15. Interface: 35135 round head external power supply 16. Recording methods: Manual recording, alarm recording, all-day recording 17. Video storage: cloud storage service, supports Micro SD card (up to 128G)18. Module: Wi. Fi 8188 IEEE802.11b/g/n 19. WIFI: 2.4GHz single frequency, 10. Mbps/100. Mbps 20. Alarm: Sound alarm, Smart tracking, Customized detection area, Motion detection 21. APP: i. Cam 36522. System configuration: iOS7.0, Android 3.0 or above 23. Platform monitoring: supports Android/iOS/tablet/PC client real-time view monitoring 24. Electricity supply for home : AC110~220V25. Power consumption: LED white light 2W，IR 2W26. Install application: Wall/ceiling mounted

Motorcycle TPMS Tire Pressure Monitoring System Sensors Tester Alarm LCD Color Display Shift For Status Precise Digital Moto

PULUZ Wireless Lavalier Noise Reduction Reverb Microphones for iPhone / iPad, 8-Pin Receiver and Dual Microphones(Black)

Features 1. Plug & play: Easy to use, switch on and plug in the receiver to connect automatically. The cell phone microphone has a mini body, it is an easy clip-on mic and enhances personal privacy protection, portable storage bag allows you to take it anywhere. This clip-on mic is a tailored gift for whom love live stream, vlogging, recording video, etc. 2. Compatible iOS devices: Wireless lapel microphone compatible for iOS phone/ Tablet, suitable for i. Phone 13 series, i. Phone 12 series, i. Phone 11 series, i. Pad Pro 11, i. Pad Pro 12.9 etc. 3. Performance wireless system: The transmission mic built in rechargeable battery. 20M/65. Ft Barrier-free connection, 360 degree omnidirectional sound reception, recording every detail. 4. Noise reduction: Omnidirectional cell phone microphone with professional-grade noise reduction chips and wind muff, enjoy intelligent noise reduction technology, effective identification of the original sound, clear recording in noisy environment. 5. Real-time auto-sync technology: The wireless mic supports multi-channel real-time mixing, it can synchronize the background music for phone and human voice in real time, reduce the video post-editing, offers professional full band audio. 6. Support phone charging: The receiver with input charging interface, support phone charging. Specification. Performance parameters: 1. Chip: Professional 2.4GHz wireless microphone chip 2. Microphone Sensitivity: -38dbm 3. Normal mode recording sample rate: 44.1K 4. Noise reduction mode recording sampling rate: 32K 5. Transmit power(MAX): 10dbm 6. Indoor barrier-free straight distance: 15-20 meters 7. Outdoor barrier-free straight distance: About 10 meters 8. Charging port: 8-pin 9. Material: ABS The working current parameters of the transmitter (TX): 1. Battery capacity: 70m. Ah (LIR1254) 2. Power off power consumption: 2.6uA 3. Power consumption: 4mA (Power on no pairing with the receiver ) 4. Power consumption: 10mA (Power on and pairing with the receiver) 5. Power consumption: 6mA(Entering silent mode ) 6. Charging current: 70mA The working current parameters of the transmitter (RX): - Power consumption: 16mA(Plug-in phone)

H96 Max 8K Ultra HD Smart TV Box Android 13.0 Media Player with Remote Control, RK3528 Quad-Core, 4GB+64GB(AU Plug)

Features 1. CPU: RK3528 quad-core Cortex-A53 2. GPU: Mali-450 3. Memory: 4GB, Flash: 64GB 4. Operating system: Android 13.0 5. Bluetooth: BT 5.0 6. Ethernet: Standard RJ-45, support 100M 7. Wireless: 2.4G/5G, IEEE 802.11 a/b/g/n/ac/ax 8. Power supply: DC 5V/2A 9. Video Decoder - Real-time video decoder of MPEG-1, MPEG-2, MPEG-4 H.263, H.264/AVC, H.265/HEVC, MVC VC-1 AVS, AVS, AVS2 - H.265 HEVC/MVC Main 10 L6.1: 8K 25fps (7680x 4320) - H.264/AVC BP/MP/HP profile at level 5.1; H.264/AVC MVC; up to 4K x 2K 60fps - H.265/HEVC Main/Main 10 profile at level 5.1 High-tier; up to 4. Kx 2K at 60fps - AVS2 4KX2K at 60fps - MPEG-1, Main profile, up to 1080P at 60fps - MPEG-2, SP at ML, MP at HL, up to 1080P at 60fps - MPEG-4, ASP profile at level 5, up to 1080P at 60fps - AVS, Jizhun profile at level 6.0; up to 1080P at 60fps - AVS-P16 (AVS+), up to 1080P at 60fps - H.263, up to 576P 60fps - VC-1, SP at ML, MP at HL, AP at L0-3, up to 1080P at 60fps 10. Display Interface - Support HDMI 2.0b output up to 4K 10bit at 60. Hz - TV interface: TV encoder 10bit out for DAC - HDMI interface: 24 bit (RGB888 YCb. Cr 444), 30 bit(RGB101010, YCb. Cr 420, YCb. Cr 444) - Max output resolution 4K for HDMI, 480i/576i for CVBS - Support 1 cluster layer, 4 smart layer - Support HDR10, HLG HDR, Vivid HDR 11. Audio: Support MP3, AAC, WMA, RM, FLAC 12. Image: HD JPEG, BMP, GIF, PNG, TIF 13. Language: Multi-Language 14. I/O: - 1 x HDMI: 4K x 2K UHD Output - 1 x AV: Support - 1 x SPDIF: Support - 2 x USB: 1 x USB 2.0, 1 x USB 3.0 - 1 x IR Receiver: Remote Receiver Connect - 1 x RJ45: Ethernet Interface; Support 100M - 1 x TF Card: Support 4GB/8GB/16GB/32GB/64GB/128GB/256GB (not included)Applications 1. Online: Browse all video websites,support Netflix,Hulu,Flixster, Youtube, etc. 2. Apps: Apps download freely form android market, amazon app store etc. 3. Medium: Local Media playback,Support HDD, U Disck ,TF Card . 4. Talk online: Support SKYPE video call ,MSN , facebook ,twitter ,QQ etc 5. Others: - Support Email,office suit etc. - Support DLNA function - Support 2.4G wireless mouse/keyboard. Package List 1. TV Box x 1 2. HDMI Cable x 1 3. Power Adapter x 1 4. IR Remote x 1 5. User Manual x 1 6. Package Box x 1

ET540 1.91 inch IP67 Waterproof Silicone Band Smart Watch, Support ECG / Non-invasive Blood Glucose Measurement(Black)

1. Support ECG electrocardiogram function, Bluetooth call, non-invasive blood sugar measurement, HRV function, AI medical diagnosis, METO function, body temperature monitoring, blood oxygen monitoring, breathing training, stress monitoring, NFC function, womens health (period tracking), heart rate monitoring , blood pressure monitoring, sleep monitoring, sedentary reminder and other health functions. Step/calorie/distance, multi-sport mode, music control.2. Screen size: 1.91 inches, high resolution 320x 386 screen 3. Screen type: IPS HD TFT4. Main control chip: ultra-low power consumption 7013A5. Body temperature sensor: contact body temperature sensor 6. Blood oxygen: infrared light + red light True blood oxygen, gravity sensor: Rohm KXTJ3-10577. ECG chip: VP555ER, photoelectric chip: dual PD-VP555ER8. Vibration: mute/vibrate 9. Waterproof level: IP6710. Compatible system: Android 4.4 and above, iOS 8.2 and above 11. Bluetooth: 5.0BLE12. Battery capacity: 260m. Ah 13. Charging method: Magnetic charging 14. Charging time: about 3-4H15. Battery life: 3-5 days in use, 20+ days in standby 16. Control method: full-screen touch control, mobile phone APP control 17. Language- 13 languages on the watch side: Chinese, English, Japanese, Russian, German, Spanish, Italian, French, Portuguese, Korean, Polish, Czech, Traditional Chinese- APP language: Russian, Hungarian, Turkish, German, Italian, Czech, Slovak, Japanese, French, Polish, Persian, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Vietnamese, Arabic, Korean.18. Other functions: stopwatch, flashlight, countdown, step counting, calories, distance, sleep monitoring, exercise mode, call reminder, alarm clock reminder, raising hand to brighten the screen, social sharing (We. Chat, QQ, Facebook, Twitter), etc, shaking Photograph.19. Material- Shell: metal alloy + stainless steel- Bottom shell: PC+ABS+medical 316 steel sheet- Strap: Eco-friendly silicone

Lenovo Thinkplus M80 Office Lightweight Ergonomic Laptop Mouse, Specification: Wireless

1. Model: Thinkpad Thinkplus M80 Wired 2. Working mode: photoelectric 3. Mouse interface: USB4. Number of keys: 35. Roller direction: two-way roller 6. Resolution: 1000 dpi (MAX)7. Cable length: 1.8 meters 8. System support: Windows 10/8/79. The classic red and black color scheme and symmetrical ergonomic design have stood the test of time and are suitable for more people’s office usage habits.10. Up to 1000DPI resolution, easily complete pixel-level detail operations 11. High-quality optical engine, more accurate positioning, smooth operation without stopping 12. The key life is up to 3 million times and is durable, providing you with stable work support.13. Mouse size: 110x 64x 33mm 1. Model: Thinkpad Thinkplus M80 Wireless 2. Working mode: photoelectric 3. Mouse power supply: 1 section 54. Number of keys: 35. Roller direction: two-way roller 6. Resolution: 1600 dpi (MAX)7. 1600DPI high resolution, pointer positioning is very obedient 8. Equipped with a high-quality optical engine, it moves accurately and can adapt to various materials such as office desks, leather, nylon, and cloth, so you don’t have to worry about working from home.9. Using 2.4GHz wireless transmission technology, the connection distance is up to 10m, and the transmission is stable to solve the problem of frame drops and lags. It is connected to an external USB interface and is compatible with most devices while saying goodbye to wired constraints, making it convenient and more practical.10. Carefully research a variety of hand shapes to create a tailor-made ergonomic design that can be used by both left and right hands to fit your hand curves, giving you a comfortable and comfortable grip experience.11. Long battery life, long standby time, no need to repeatedly replace the battery 12. Frosted surface texture, beautiful and practical 13. Little red dot roller, eye-catching classic color 14. Built-in USB receiver, portable and not easy to lose 15. Key life of 3 million times, durable

WIWU SW01 S9 2.1 inch IPS Screen IP68 Waterproof Bluetooth Smart Watch(Black)

1. Functions: Support GPT, NFC access control, GPS positioning, AI voice assistant, Alipay payment code, social QR code, Bluetooth calling, Bluetooth music playback, breathing training, Meteo, massive dials, custom dial push, stopwatch, Brightness adjustment, multi-sport mode (indoor and outdoor), sleep, real heart rate, blood pressure, blood oxygen, information push, remote photography, real-time weather, find mobile phone (connected to mobile phone), password protection, calculator, split-screen display, shortcut Widgets, weather, alarm clock, multiple menu styles, compass, dock 2. APP supports languages: Simplified Chinese, Traditional Chinese, English, Dutch, German, Russian, Thai, Spanish, Portuguese, French, Japanese, Italian, Polish, Korean, Arabic, Persian, Vietnamese, Danish, Turkish, Hebrew, Indonesian, Greek, Czech, Malay 3. The watch supports languages: Simplified Chinese (default), English, Russian, Spanish, German, French, Portuguese, Polish, Turkish, Hebrew, Arabic, Indonesian, Vietnamese, Thai, Persian ,Malay. Parameters:1. APP: Wearfit Pro 2. Chip: SF32LB551 (Sich)3. Heart rate sensor: HRS33014. Andiord system: supports Android 6.0 and above 5. iOS system: Apple IOS 8.4 or above 6. Bluetooth: Bluetooth 5.0+Bluetooth 3.07. Waterproof level: IP688. Product technology: zinc alloy + IML9. Screen size: 2.1 inches 10. Screen resolution: 320 x 39011. Screen type: IPS full-viewing color screen, narrow bezel and black border 1.3MM12. Touch material: OGS+Panda explosion-proof glass 13. Battery voltage: 3.7V14. Battery capacity: 380m. Ah 15. Battery type: lithium battery 16. Battery life: 3-5 days of normal connected use, 60 days of standby 17. Charging method: supports wireless charging 18. Charging time: about 2.5 hours 19. Total length of wristband: 150-260mm 20. Wristband material: silicone

Q820 6MP 10X Binocular Zoom Dual Light Source Outdoor IP67 Waterproof WiFi Camera(EU Plug)

Features:1. 10x zoom, 3MP +3MP HD lens.2. Intelligent detection, intelligent tracking doubling, can solve the problem of unclear vision from a long distance.3. Supports dual stream output, allowing for free switching between dual screen and picture in picture display on the phone, and sharing of images with multiple people.4. The dual core design, combined with multiple angle light cups, can solve the problem of unclear vision at night.5. Bidirectional voice intercom, real-time communication without distance.6. Intelligent loop recording, allowing you to view playback anytime, anywhere. Both local and cloud services can be stored.8. Easy installation, self installation, no need to hire professional construction personnel.9. Adjustable angle: Rotate left and right by 350 degrees, and rotate up and down by 90 degrees.10. APP: Care Cam Pro. Specifications:1. Sensor: 1/2.8 Image Sensor 2. Compression format: H.265/H.2643. Pixel: 2304x 1296, 3MP+3MP4. Lens: 4.0 mm+8mm focal length, F2.0 aperture 5. WIFI: Single frequency 2.4G6. Detection methods: humanoid detection, motion detection 7. Detection distance: 0-12 meters 8. Detection angle: 72 degrees 9. Alarm methods: speaker alarm, alarm recording, information push, image push, video push (requires cloud storage activation)10. Night vision mode: full-color night vision 11. Infrared: Infrared LED (6 dots 20mil) with a distance of 20m 12. White light: White LED (6 white light 1W) with a distance of 15m 13. Audio: Built-in 2W speaker and built-in microphone with a 10 meter monitoring range 14. Storage: Cloud storage, TF card (supports up to 128GB)15. APP operating system: Android, IOS16. Power supply: DC 12V 1.2A17. Working power: No more than 15W18. Accessories: Camera x 1, screw pack x 1, user manual x 1, waterproof cap x 1, power adapter x 1

Portable Smart Voice Translator Bluetooth Instant Voice Translator Real-time Travel Business Translator Support 22 Languages

Output Language:Russian,Chinese,Portuguese,Japanese,French,Arabic,English,Spanish,Italian,Korean. Input Language:English,Japanese,Spanish,Italian,Korean,Arabic,French,Chinese,Portuguese,Russian. Style:Portable. Display Screen:No. Type:Voice Translationfunction 1:translatefunction 2:traducteur vocalfunction 3:bluetooth headphonefunction 4:headphones for a mobile phonefunction 5:wireless headphonesfunction 6:headphonesfunction 7:wireless bluetooth headsetfunction 8:Bluetooth headphonesfunction 9:Bluetooth headsetfunction 10:wireless earphones. Description:This is not only a simple Bluetooth wireless earphone, but also a useful multi-language translator. It can translate up to 22 languages into each other for learning, travelling, business, and meeting. TWS true wireless technology gives you an unexpected comfortable Hi. Fi music enjoyment without messy wire. Slim and elegant design for comfortable wearing. Order and enjoy it! Features:Multiple Languages Translation: Support up to 22 languages translation for Android system, while support 25 languages for iOS system. Speak to the earphone, then it will translate into the voice of the country you want. Bluetooth True Wireless Connection: Optimized Bluetooth 4.1 version allows stable and fast audio transmission, true wireless connection for up to 10 meters, easy to connect to your Bluetooth devices in seconds. High Fidelity Audio Output: Built-in 8mm moving coil speaker which allows Hi. Fi audio effect and keeps bass more surging, bring unexpected smooth and clear music to your ears.TWS true wireless in-ear design: mini and compact, no messy wire and easy to wear, stable and comfortable for driving, running, travel, and other indoor or outdoor activities. Listen Longer: Built-in 90m. Ah rechargeable lithium battery, ensures super endurance, support playing for up to 5-8 hours, talking for up to 4.5 hours. Widely compatible for i. Phone/ Samsung/ i. Pad and more. Specifications:Color: Black. Type: TWS Ear Hook Type. Bluetooth Version: V4.1. Bluetooth Protocol: HEP/ A2DP/ HSP/ AVRCP/ BLETransmission Distance: 10m. Compatible Device: For i. Phone/ Samsung/ i. Pad. Supports Languages Translation: Chinese, English, Japanese, Korean, Russian, French, Thai, German, Italian, Arabic, Spanish, Danish, Swedish, Finnish, Dutch, Portuguese, and so on. Battery: Built-in 90m. Ah Rechargeable Li-ion Battery. Charging Time: About 1h. Playing Time: 5-8h (Actually depends on playing volume.)Talking Time: About 4.5h. Standby Time: About 120h. Size: Approx. 57 x 18 x 8mm/ 2.2 x 0.7 x 0.3in. Package Weight: 84g Package List:1 * Translation Earphone 1 * USB Charging Cable 1 * Pair of Earmuff

OEM manufacturer tire pressure monitoring system 6/8/10 sensors for truck bus TPMS

High-quality Smart Wireless Solar Tire Pressure Monitor System With 26 18 16 14 12 10 8 4 RV Truck TMPS Sensors

Gledopto WiFi Din Rail Power Meter Real Time Energy Monitoring Tuya Smart Life App Wireless Remote Control Power Display

E530 1.91 inch IP68 Waterproof Silicone Band Smart Watch Supports ECG / Non-invasive Blood Sugar(Black)

1. Functions: Support ECG (high frequency 512HZ) monitoring, HRV and heart health index analysis, ECG belt monitoring, real-time ECG analysis of chest stickers, non-invasive blood sugar, body temperature monitoring, blood oxygen monitoring, Lorenz scatter diagram, heart rate Monitoring, blood pressure monitoring, multi-sport mode, custom dial, online multi-dial, exercise record. Sleep monitoring, incoming call and message reminder, ultra-low power consumption and long battery life. Metal alloy casing, silent alarm clock, remote camera, music control, sedentary reminder, drink water reminder, weather display, countdown, shake to take pictures, mobile phone search.2. CPU chip: low power consumption GR5515, PPG sensor chip: OSRAM SFH22013. ECG chip: TYHX3220 (high frequency 512HZ)4. Blood oxygen chip: GH3220 analog front end + OSRAM SFH22015. Gravity acceleration sensor: Rohm KXTJ3-10576. Battery: 280mAH7. Display: 1.91 inches 240x 284 high-definition touch screen 8. Heart rate: green light PPG9. Waterproof: IP68 rating 10. Bluetooth version: Bluetooth 5.1 (Android 5.0 and above, IOS9.0 and above)11. Shell material: alloy metal + plastic 12. Charging method: USB magnetic suction 2pin charging cable (with protection)14. Standby time: 30 days of standby, 4-7 days of daily battery life (the above data are from the factory laboratory, and may vary due to personal use environments and processes)15. Language- APP: Russian, Hungarian, Turkish, German, Italian, Czech, Slovak, Japanese, French, Polish, Persian, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Vietnamese Chinese, Arabic, Korean- Watch side: Chinese (simplified), Korean, Japanese, German, French, Italian, Spanish, Portuguese, Russian, English

Lenovo Thinkplus M80 Office Lightweight Ergonomic Laptop Mouse, Specification: Wired

1. Model: Thinkpad Thinkplus M80 Wired 2. Working mode: photoelectric 3. Mouse interface: USB4. Number of keys: 35. Roller direction: two-way roller 6. Resolution: 1000 dpi (MAX)7. Cable length: 1.8 meters 8. System support: Windows 10/8/79. The classic red and black color scheme and symmetrical ergonomic design have stood the test of time and are suitable for more people’s office usage habits.10. Up to 1000DPI resolution, easily complete pixel-level detail operations 11. High-quality optical engine, more accurate positioning, smooth operation without stopping 12. The key life is up to 3 million times and is durable, providing you with stable work support.13. Mouse size: 110x 64x 33mm 1. Model: Thinkpad Thinkplus M80 Wireless 2. Working mode: photoelectric 3. Mouse power supply: 1 section 54. Number of keys: 35. Roller direction: two-way roller 6. Resolution: 1600 dpi (MAX)7. 1600DPI high resolution, pointer positioning is very obedient 8. Equipped with a high-quality optical engine, it moves accurately and can adapt to various materials such as office desks, leather, nylon, and cloth, so you don’t have to worry about working from home.9. Using 2.4GHz wireless transmission technology, the connection distance is up to 10m, and the transmission is stable to solve the problem of frame drops and lags. It is connected to an external USB interface and is compatible with most devices while saying goodbye to wired constraints, making it convenient and more practical.10. Carefully research a variety of hand shapes to create a tailor-made ergonomic design that can be used by both left and right hands to fit your hand curves, giving you a comfortable and comfortable grip experience.11. Long battery life, long standby time, no need to repeatedly replace the battery 12. Frosted surface texture, beautiful and practical 13. Little red dot roller, eye-catching classic color 14. Built-in USB receiver, portable and not easy to lose 15. Key life of 3 million times, durable