About this item

• [Size Before You Buy] AutrefoisElf smart ring for women and men utilizes a unique sizing system. Available in Size 6-14, we strongly suggest referring to our size chart and measuring your finger circumference carefully. Using the sizing kit before purchase ensures the comfortable wearing experience and optimal sensor performance
• [24/7 Health Monitoring & No Subscription] This smart ring tracks heart rate, HRV, sleep, stress levels, blood oxygen, and daily activity. This fitness tracker helps you better understand your daily wellness trends with no subscription fees
• [Long Battery Life & Wide Compatibility] Charge the fitness ring in about 1 hour for 3–5 days of regular use. The charging case provides up to 30 days of power, with USB direct charging for flexibility. This smart ring is compatible with Android 5.0+ and iOS 10.0+
• [140+ Sports Modes & Steps Tracking] This smart health ring supports 140+ sports modes and tracks steps, calories, distance, and exercise time. GPS is supported for walking, running, outdoor cycling, trail running, and hiking
• [5ATM Waterproof] With 5ATM water resistance up to 50M, this waterproof smart ring is ready for sweat, rain, showers, swimming, workouts, and everyday water contact, making it easy to wear throughout your daily routine
• [Ultra-Slim Profile & Matte-Polished Finish] The health ring for women and men features a sleek 3mm thickness design and weighs only 3g. Its matte finish with polished details adds a refined, modern look, combining elegance with cutting-edge technology for comfortable day and night wear