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,Body Temperature Monitor,Stress Monitor Item Weight:10 Case Material:STEEL Certification:ce,FCC Battery Capacity(mAh):14mAh Key Feature APP:Qring Chipset: RTL8762 Memory:RAM 104KBROM 512 KB BT: BT5.2 Waterproof grade:5ATM Body MaterialAlloy Battery: 14mAh Lithium polymer Charging MethodMagnetic charging warehouse Charging Time: About 1.5 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 measurement, blood oxygen saturation, HRV heart rate variability, stress, sleep tracking, multiple exercise modes, skin temperature measurement 2> Exercise Record: Steps, Distance, Calories, 3> Other functions:Remote control photography, ring searching, female physiological reminders 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