Hardware Configuration:  CPU: MT676X.  Display Screen: 2.88 inch TFT.  Touch Screen: Rectangular full touch.  Resolution: 480*640.  RAM/ROM: 4G+64GB.  SIM card: Nano SIM.  The Internet: 2G/3G/4G.  System: Android 9.0.  Frequency Band: GSM: 850/900/1800/1900.  WCDMA: B1/B2/B5/B8.  TD-SCDMA: B34/B39.  LTE-FDD: B1/B2/B3/B5/B7/B8/B12/B17/B20.  LTE-TDD: B38/B39/B40/B41(100MHz).  Camera: Positive camera 5 million, side camera 13 million difference.  Bluetooth: 5.  Heart Rate Sensor: Tianyi Hexinxin HRS3300.  Battery: 2300mAh.  WIFI: Support 2.4G/5G.  GPS: GPS+Go.  Bluetooth Effective Distance: >10 meters (open environment).  Battery Life: 3 days.  Charging Method: Magnetic charging.  Charging Time: 3 hours.  Material Technology:  Watch Case: Aluminum alloy.  Button: Aluminum alloy.  Strap Material： Silica gel.  Head Size: 77.2*53.6*15mm.  Strap Size: 32mm width, total length 288mm, adjustment range 190-270mm.     Product Specifications:  Packing List: Smart watch*1, strap*1, magnetic wire*1, screwdriver*1, manual*1.  Manual Language: Chinese, English, French, Spanish, Portuguese, German, Italian, Japanese, Russian.  Stand-alone Weight: 132g.  Product Gross Weight: 255g.  Package Size: 103*103*75mm.     Function Introduction:  Product Features: Support manual language selection on the watch, make and receive calls, phone book, send text messages, download third-party apps, video calls, photos, alarms, calendars, calculators, recordings, local music playback, weather, voice search, step counting, heart rate, Multi-sports mode, find mobile phone, stopwatch, music control, raise your hand to brighten the screen, dial replacement, message push, etc.  Support System: Android: Support original operating system 6.0 and above, (Settings-about the device, check the android version) IOS: Support 11.0 and above system version. It can be set through the mobile phone-General-About this machine, check the version, if the user is lower than 11.0 version, please upgrade first.  Support Language: Chinese, English, German, Spanish, French, Indonesia, Italy, Netherlands, Norway, Poland, Portugal, Vietnam, Turkey, Greek, Russian, Ukrainian, Hebrew, Persian, Arabic, Thai, Korean, Bengali, Hindi (this is a relatively accurate translation language) The translations in other hundreds of languages are not very accurate Full-time Display: 1) Date, week, clock, minute (real-time display);  2) Time system: 12/24 hour dual system;  4) After the mobile phone APP Bluetooth is connected, the watch will automatically read the mobile phone time, date, format and synchronize.  Walking Movement Monitoring:  1) Accurately monitor walking (number of steps), physical energy consumption (calories), walking distance (Km);  2) 24-hour full-time monitoring.  Information Reminder: After connecting with the mobile phone APP Bluetooth, the watch will vibrate in time to remind you of incoming phone calls, SMS, QQ, WeChat, Twittre, Facebook, Whatsapp, Skype and other information.  Bluetooth Off Shortcut Key: The user can turn off or start the Bluetooth push function of the mobile phone according to the actual function, so as to appropriately reduce the power consumption of the watch and turn on (or off) the information push reminder.