Feature:Specification:Features:Light and Comfortable: The smart ring weighs only 2.9 grams and is 2.8 millimeters thick, making it light and comfortable to wear. You'll hardly notice it's there.All-Day Health Monitoring: The ring can monitor your heart rate, sleep quality, and physical activity around the clock, helping you better understand your health.Efficient Smart Experience: The ring uses a German DA14531 chip to provide you with excellent performance and an efficient smart experience, and has ultra-low power consumption, making it more durable and practical.Remote Camera Control: The smart ring can remotely control the camera, making it easy for you to become a professional photographer.Multiple Exercise Modes: Supports a variety of regular exercises + map trajectory exercises, including fast walking, running, cycling, etc.IP68 Waterproof: Fully enclosed structure, IP68 waterproof technology, can be worn for swimming, diving or snorkeling, supports 1000 meters deep waterproof.Specification:Optional color: Black / Gray / Gold / Gold & Gray / Gray & GoldOptional size: 8# 18.1mm / 9# 18.9mm / 10# 19.8mm / 11# 20.6mm / 12# 21.4mmBattery capacity: 20mAhProduct weight: About 2.9gChip: DA14531Heart Rate sensor: HR3602Storage capacity: 128kb ROM +96 Kb RAMBattery Type: Polymer batteryWorking temperature: 0-50°CCharging method: Magnetic chargingCompatibility: Android 5.0 and above; Apple IOS 10.0 or laterCompatible Software: JYOUPROPackage size: 8*8*5cmPackage weight: 80gPackage list:1* Ring1* Charging cable1* ManualPackage List:Package list:1* Ring1* Charging cable1* Manual