After successful connection with fitpro app and Bluetooth, you can make and receive calls on the watch and synchronize the frequently used contacts in the phone book Built-in high-quality stereo speakers, so that you can immerse yourself in the wonderful song at any time Long press TP 2 seconds on the dial page to start intelligent voice assistant to make calls, answer calls, etc. to free your hands Using optical heart rate sensor, through the visual optical band measurement technology, the heart rate and blood pressure data can be obtained through precise calculation, and the results can be measured at any time; if connected to fitpro app, all the measurement records can be viewed,and the fitpro app can also be used for remote measurement Specifications: Hardware information CPU HS6620D/BK6623 Flash 8M bit+16M bit GPS/AGPS NO G-sensor YES Wifi NO SIM NO BT 4.2+5.0 Bluetooth-compatible antenna Support antenna pad LCD 15PIN 1.69 Inch Screen TFT TP Single touch/Compatible with multi-touch Heart rate sensor YES G-Sensor SC7A20 Motor YES Wireless Charging NO Camera NO Side key YES Bluetooth-compatible call YES Strap material Silicone Waterproof Level IP67 Appearance material Zinc alloy + ABS Battery capacity 3.7V/160mAh Software function basic function step, distance, Calorie, Heart Rate/Blood Pressure/Oxygen Monitoring, Sleep monitoring, call reminder, SMS Alerts, Social APP Message Reminder, Alarm clock reminder, A sedentary reminder, sport, Turn the wrist and shine the screen, Looking for bracelets, Looking for Phones, Remote Photography, Rejection of calls, Do Not Disturb, Multi-dial switching, Bluetooth-compatible call Social APP Message Reminder WeChat, QQ, Facebook, Twitter, Line, Whatsapp, Instagram Multi-sport Rope skipping, Run, situp, Table Tennis, Basketball, Badminton, Mountaineering, etc. Message Push Language Simplified Chinese, All European countries APP System IOS 9.0 and above,  Android 5.0 and above APP Language English, SC, TC, Netherlands, Russian, French, German, Portuguese, Spanish, Turkish, Japanese, Polish, Arabic, Malaysia, Thai, Czech, Slovak Package included:1 x Smart Watch1 x Charger1 x English and Chinese User Manual