Specifications Hign-concerned Chemical:None Waterproof Grade:5ATM Model Number:R09 Display screen:No NFC Support:No Activity Tracked:Activity Tracker,Steps Tracker,Distance Tracker,Calorie Tracker Metrics measured:Heart Rate Monitor,Sleep Monitor,Blood Oxygen Monitor,Stress Monitor Item Weight:4g Case Material:STEEL Certification:ce,FCC Battery Capacity(mAh):15mAh Key Feature APP:Qring Chipset: RF03 Memory:RAM208KB FLASH 512KB BT: BT5.0 Waterproof grade:5ATM Body MaterialStainless steel Battery: 15mAh Lithium polymer Charging MethodMagnetic charging warehouse Charging Time: About 1.0 hours Normal Using Time: 5-7 days (depending on personal habits) Standby Time: 7days-10days AuthenticationCE;FCC;RoHS Supported Systems :Android 5.0 and above iOS 10.0 and above Main Function 1> Health management: Heart rate, blood oxygen saturation, pressure, sleep tracking 2> Exercise Record: Step count, Distance, Calories 3> Multiple sports modes, camera control by gesture Firmware language: Danish, Ukrainian, Russian, Croatian, Hungarian, Hindi, Indonesian, Trkiye, Hebrew, Greek, German, Italian, Latvian, Czech, Slovak, Slovenian, Japanese, French, Polish, Thai, Estonian, Swedish, Lithuanian, Simplified Chinese, Traditional Chinese, Romanian, English, Dutch, Portuguese, Spanish, Vietnamese, Arabic, Korean, Malay Package Included: Original Ring x1,Charger Warehouse x1,Manual x1,Charing Cable x1