Main features:Heart Rate MonitorCardio exercises like aerobics are great for improving heart and lung capacity as well as weight loss. By using a photoplethysmography (PPG) sensor, It is able to provide real-time heart rate readings.Blood Pressure MonitorMeasure your blood pressure directly on your hand and keep abreast of your physical condition.Sleep ModeWhen sleep , Band will automatically monitor how long and how well you sleep .Please setup sleep time from"Personal information".(pls wear the band when you sleep so as to record your sleep data)ReminderSupport for alarm, drink water, Sedentary, Calling, SMS(Message, QQ, Wechat, Skype, Facebook, Twitter, Line, Whatsapp), Anti-lost Reminding. The watch will remind you with vibration.Other FunctionMusic control,Time, Remote Camera,Find the band, Pedometer, vibratng reminder, Anti-lost, Distance Calculation,Alarm clock.Watch support language: Russian, Portuguese, Spanish, English, ChineseAPP LanguageChinese, English, Japanese, Korean, Spanish, German, Italian, French, Greek, Russian, Dutch, Portuguese.APP & BraceletApp Name :Da fitDevice name :KW19Supported mobile phones: Bluetooth 4.0 Android 5.1 IOS9.0 and above?Perfectly compatible with Samsung phones?Standby time: 140mAh large capacity polymer battery; standby time 8 days, normal use 2 daysCharging time: two hoursPacking list?Smart watch X 1Charger X 1Watch instructions X 1Watch box X 1