Advanced Health Monitoring: Equipped with sensors to monitor heart rate and blood oxygen levels, ensuring you stay informed about metrics at all times. Waterproof Design: Perfect for all weather conditions and sports activities, this smart ring is designed to withstand immersion, allowing you to keep it on during swimming or rainy weather. Multi-Sport Modes: Tailor your fitness tracking with sports modes, adapting to whatever workout you choose, from running to cycling. Remote Control Features: Effortlessly control camera settings and music playback on your smartphone directly from your finger, enhancing convenience during workouts or when your hands are full. and Stylish: Crafted for both functionality and style, this smart ring is an ideal accessory for men who value technology and fashion. Main control chip: JL7073A Bluetooth: 5.4 Battery capacity: 18mAh Water resistance: 5ATM Charging method: Magnetic charging Specifications:D:21.6mm Color:Black Material:Metal Package Contents: 1 * Smart Ring 1 * Charging Station Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.