SR1 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: 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 & Gold Optional size: 8# 18.1mm / 9# 18.9mm / 10# 19.8mm / 11# 20.6mm / 12# 21.4mm Battery capacity: 20mAh Product weight: About 2.9g Chip: DA14531 Heart Rate sensor: HR3602 Storage capacity: 128kb ROM +96 Kb RAM Battery Type: Polymer battery Working temperature: 0-50°C Charging method: Magnetic charging Compatibility: Android 5.0 and above; Apple IOS 10.0 or later Compatible Software: JYOUPRO Package size: 8*8*5cm Package weight: 80g Package list: 1* Ring 1* Charging cable 1* Manual