Features： 【1.72 Inch HD Screen & Long Lasting Battery】This smartwatch has a 1.72 inch HD color screen, 240*280 perfect resolution, full touch screen operation design gives you a better viewing experience. Username. The large capacity of 200mah battery, can be fully charged in about two hours, 30 days of standby and 5~7 days of working. Supports smartphones with iOS 9.0 or later and Android 5.0 or later, Bluetooth 4.0 version. 【Smart Watch with Call Function】Using high-quality speakers and noise-reducing microphones, connect the smart watch to the mobile phone via Bluetooth, smartwatch can answer calls, make calls and reject calls, etc. You can also answer the phone at any time when you are running, cycling or exercising, so as not to miss any calls. The smart watch can play music, listen to music as a bluetooth speaker. 【Health & Activity Tracker】This smartwatch has high-performance motion sensors that monitor heart rate, sleep quality (deep sleep, shallow sleep, wake up) and blood oxygen levels, and will record and analyze the data in real time. the app. You can view the daily situation on your phone to help you create a healthier lifestyle. Smart watch accurately records daily activities such as steps, distance, calories burned, etc. Specifications: Chip: RTL8762C+JL6963 Memory: 64M/32M Screen: 1.72 inches Screen Resolution: 240*280 Touch: soft touch Heart rate: dynamic heart rate button: multi-touch screen + knob button / switch button. Battery: ma polymer battery Power interface: magnetic charging Speaker: 6 Ω/1W, AAC super loud speaker Microphone: high sensitivity, anti-interference microphone Vibration motor: silent and powerful motor Dual Bluetooth: 5.0 + 5.0 System: Support Android 5.0, IOS9.0 and above Call/SMS reminder: Android, IOS push Call and message content. Languages: Simplified Chinese, English, French, Spain, Portugal, Russian, German, Netherlands, Turkey, Malaysia, Poland, Czech Republic, Slovakia, Philippines, Indonesia, Ukraine, Vietnam, Italy List of main functions Support calls, heart rate detection, blood pressure detection, sleep monitoring, dial pad, phone book, music player, pedometer, information, multi-dial switch, theme switch, anti-lost, phone search, call history, weather , remote photo, wrist lift bright screen, stopwatch, remote control music, sedentary reminder, alarm clock, air OTA update, incoming call reminder, SMS reminder Multi-sports modes: 9 sports modes such as walking, running, skipping, sitting, tennis, badminton, cycling, basketball, volleyball, etc. Note: 1. Wearable devices monitor human activities through electronic sensors, and are at the consumer electronic level. It is normal that there is some deviation. The user must treat the data objectively. Please do not compare it with hospital equipment to read, it is not a medical device! 2. Before use, please scan the QR code on the manual to download the app, and connect it to the watch with the app. Connect: NK20 3. Please charge it for 2-3 hours when you receive it. Sold out after a long delivery. Thanks! 4. For Android users: Always authorize the app access to all phone functions and let it work always. And please turn on the GPS on your phone before connecting it. Package includes: 1x smart watch 1x charging cable 1 user manual