About Product 1. Battery capacity: 50mAh 2. CPU:PHY6222 3. Bluetooth version : Bluetooth 4.0 4. Charging mede:USB charging 5. Resolution:128*128 6. Standby time:75 Hours 7. Watch languages: English, Simplified Chinese, Dutch, Russian, French, German, Portugal, Spain, Turkey, Poland, Malaysia, Czech Republic, Slovakia 8. APP:Fit-here Function 1. Heart rate monitoring,blood pressure monitoring,blood oxygen monitoring 2. Step,distance,calorie 3. Sleep monitoring (sleep duration, sleep quality) 4. Multi-sport modes:running, skipping, sit-ups 5. Message Reminder:QQ,Wechat,Facebook,WhatsAPP,Line,Twitter,Instagram 6. Sedentary reminder,call reminder,SMS notification,alarm clock,remote photography,looking for bracelet,looking for phone,turn wrist and shine screen