Diamond smart ring for women. a stainless steel, lightweight ring that combines style with health tracking. it accurately tracks steps, distance and calories, for indoor or outdoor running and walking. Heart rate monitoring builtin performance heart rate sensor uses a green light to measure your heart rate and sleep. you can also use the app to measure your heart rate. Sleep tracking and insights automatically monitors your sleep quality and generates a sleep report to help you develop good sleep habits. analyzes sleep data and sleep depth to support better routines. Battery and durability battery capacity 18 mAh with a typical 3 to 5 day usage on a single charge. ip68 waterproof smart ring wear it without restraint during workouts or daily activities. you can wear it when you sweat and when you wash your hands. do not soak in hot water or sea water. 23 practical use scenarios fitness and daily activity: track steps, distance and calories during indoor or outdoor running and walking to monitor daily activity and overall energy burn. sleep optimization: wear overnight to automatically track sleep quality and receive a sleep report to improve sleep habits and depth analysis. all day wear in daily life: comfortable stainless steel ring that stays on during sweating or hand washing, suitable for regular use and travel.