HEALTH MONITOR AT YOUR FINGERTIPS: This smart ring for women and men is an all-in-one health tracker, measuring heart rate, blood oxygen levels, activity, and sleep patterns right from your finger with this compact fitness tracker ring. ALL-DAY ACTIVITY TRACKING: Motivate an active lifestyle by monitoring steps, distance, calories burned and more throughout the day while you go about your routine. LONG BATTERY ON A SINGLE CHARGE: Get up to 5-7 days of use from a single 2-hour charge thanks to efficient battery management and an 18mAh battery. MEASURE YOUR SIZE: Choose the perfect fit from a range of sizes between US ring sizes 7 through 12, ensuring all-day comfort. ALL-DAY WEARABLE DESIGN: Ultra-light stainless steel ring is comfortable enough to wear all day and night with IP68 waterproof protection for swimming and rainy activities Fitness Tracker Smart Ring, Step Counter for Walking, Heart Rate Blood Oxygen Calorie Sleep Tracker Health Ring, IP68 Waterproof Design, Stainless Steel, 5-7 Days Battery Life, Silver + Middle Gold