Smart Ring Smart Ring Multi-Sport Mode Recording Health Tracker, Fitness Sleep Heart Rate Smart Ring, Waterproof IP68 Long Battery life Fitness Tracker Rings APP for Men and Women Features: Sleep Like A Baby: Our smart ring automatically tracks your sleep quality when you fall asleep, generating a report to help you develop good sleep habits. You can view real-time heart rate data through the QRING APP, and the ring can independently monitor your body even without a phone connection. Stay Active, Stay Healthy: Accurately record steps, calories, distance, and recognize multiple exercise modes to meet your needs. Enjoy sports anytime, anywhere. Comfort Is Key: The outer ring is made of stainless steel polished tens of thousands of times by CNC, and the inner ring is made of hypoallergenic environmentally friendly resin. With a weight of only 4.4g, it is comfortable to wear. Long Battery Life: With a standby time of 15 days, a battery life of 7 days, and a charging time of 1 hour, you can enjoy the convenience of our smart ring without worrying about battery life. Health At Your Fingertips: Wear it now for sleep monitoring, heart rate monitoring, and daily activity tracking. Take control of your health with our smart ring. Waterproof For Life: With IP68 waterproof technology, you can swim, wash your hands, and shower without removing the ring.  Specification: Optional color: Black / Gold Optional size: 8# 18.1mm / 9# 18.9mm / 10# 19.8mm / 11# 20.6mm Chipset Supplier: Synnex Micro Chipset: RF03 APP: QRing Compatible System: Android 5.1 (including) or above, IOS 8.0 (including) or above FLASH memory: ROM512KB BT: 5.0 low-power BT chip Sensor: Acceleration sensor, heart rate Battery type: Li-ion polymer Battery capacity: 17mAh Charging method: magnetic charging APP support language: Danish, Ukrainian, Russian, Croatian, Hungarian, Hindi, Indonesian, Turkish, 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 Waterproof Level: IP68 Charging time: about 1 hour Battery life: 5-7 days of use, standby for 15 days Appearance material: stainless steel Package size: 75*75*43MM Package weight: 70.25g Package list: 1* Ring 1* Charging cable 1* User manual