Smart Ring Fitness Tracker for Women Men without Subscription Black,11 Health Rings Gen4, 24/7 Heart Rate/SpO2/Stress/Sleep Monitor, 50M Waterproof, Dual Charge, 140 Sport Modes for Every Activity

[Size Before You Buy] This smart ring for women and men uses 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 a comfortable wearing experience and optimal sensor performance. [24/7 Health Monitoring & No Subscription] Gain deep insights into your body with 24/7 heart rate, HRV, sleep, stress levels and oxygen saturation. This fitness tracker helps you understand your physical trends without any subscription fees. [30-Day Power & Dual Charging] Features an ultra-thin 5mm design with a revolutionary dual-charging system.

Use the dedicated data cable for a direct charge, or use the portable charging case for up to 30 days of total battery life. A quick 1-hour charge supports 3-5 days of regular use, ensuring you stay powered anywhere. [140+ Sport Modes & 50M Water Resistant] Whether you are swimming, showering, or hitting the gym, the 50M waterproof rating has you covered. The fitness ring tracks 140+ activities with precision, capturing every step and calorie burned to help you reach your fitness goals. [Sleep Tracking & Smart Versatility] With a 5mm thin and lightweight build, this smart ring tracks deep, light, REM sleep stages and calculates sleep quality scores.

Compatible with Android and iOS, it provides female cycle tracking and a shake-to-capture remote camera function