Product description: Chip: Realtek 8762C Screen: 1.28 inch IPS color Full touch screen Operation method: Full screen touch + button Bluetooth version: Dual Bluetooth BET4.0 Battery capacity: 400mAh Charging method: Magnetic adsorption charging Standby time: about 30 day Usage time: about 7~15 day(Use time is determined by frequency of use. Frequent use will reduce use time) Waterproof level: ip68 Waterproof (Note: Please do not use it when swimming and showering) Compatible system: iOS 8.0 version above and Android 4.4 version above APP name: Da Fit Support language: English,Japanese,German,French,Spanish,Arabic,Russian,Ukrainian,Portuguese Functions： * Dial: Multiple watch faces pushing, Customized watch faces * Heart rate detection / Blood pressure detection / Blood oxygen detection / Wole-day heart rate monitor * Timer, Pedometer, Calorie Consumption, Distance Calculation, Heart rate, Blood pressure, Blood oxygen, Sleep time /quality, On & Off dispaly, Multiple sport modes * Sleep detection (Sleep time ,Sleep quality) * Calls to remind, SMS Reminder, Third-party messaging reminder Multilingual push, Clock alarm, Remote Camera, Sedentary reminder * Female physiological period reminder * Synchronous data to APK/APP * Download “Dafit" from Android market,Google play or Apple store. Scan the QR code and download “Dafit" Note: Wearable devices monitors human activities through electronic sensors,and they are at the consumer electuonics level.It's normal for certain deviation.The user should treat data objectively. --Please do not compared to hospital equipment about reading,it is NOT a medical device ! --Before using, scan the QR code on the manual to download the app and connect it to the watch with APP. ​ -- Please charge it for 2-3 hours when you receive it. it was run out of power after the long delivery. Thank you! Questions & Answers Q: What phones is this watch compatible with? A: It is compatible with IOS 8.0 and above, Android 4.4 and above Q: Will this watch show push notifications? whatsapp,email, facebook. A: Yes.and Support Skype,linkedin,Twitter,Viber,line .you can Read the message content. Q: Is the watch waterproof? A: Yes. The watch is Life Waterproof. For splashes when washing hands, sweat when exercising, and rain when it rains. Can play a protective role.(Note: Please do not use it when swimming and showering) Q: Can the watch measure heart rate and blood pressure? A: Yes. The watch can measure heart rate and blood pressure. and can synchronize data to APP for viewing. (Please do not compared to hospital equipment about reading,it is NOT a medical device !)