【All Day Health Monitoring】LED smart ring health 24-hour uninterrupted recording of sleep structure, monitoring of your , measuring saturation, accurately capturing every beat, and presenting real-time changes in physical signs, like a protector, guarding your health every day.【Pre-purchase Tips】If you don't know how to measure your own size, please refer to our video or the second picture to learn the measurement method to get the accurate ring size【IP68 Waterproof】This LED smart rings for men adopts IP68 waterproof technology, which can withstand long-term immersion in both freshwater and seawater environments without damage. IP68 rated devices can cope well and meet the needs of different underwater activities such as swimming, diving, and water sports, allowing users to engage in these activities without worrying about equipment damage due to contact with water.【LED Fitness Ring】LED intelligent motion monitoring. You can view your daily exercise data, including calories, mileage statistics, and exercise time. When exercising, you can turn on the exercise mode, which can better analyze your exercise status. Like a professional coach, it accurately captures every movement, ensures the accuracy of every data, and makes your exercise journey more efficient and scientific.【High Quality Materials】Low power APP Bluetooth 5.4 connection. No subscription fee required, smart ring made of sturdy and durable stainless steel and epoxy resin, ensure high strength and corrosion resistance, while also providing reliable protection for equipment, ensuring that internal precision components are not affected by external factors. Epoxy resin provides strong protection for the service life of equipment with its excellent insulation and wear resistance.