Smart Ring for Women, Health Tracker & 5ATM, R02.(Black Ceramic, 9#) Smart Ring & No Subscription Fee, Menstrual Cycle, Skin Temperature, Heart Rate, Sleep Health Monitoring, Sports Tracking

[No App Subscription Fee Required] No app subscription fee is needed. Access core data such as heart rate monitoring, sleep analysis, and 24/7 activity tracking. [Purchase a Sizing Kit] Before purchasing the R02 smart ring, purchase a sizing kit or measure your finger size according to the size chart to select the correct ring size for a comfortable fit and to avoid unnecessary returns or exchanges. [Nighttime Sleep Insights] Tracks continuous nighttime rest for holistic wellness trends.
Note: The algorithm is calibrated for nighttime cycles. [Heart Rate Measurement] 24/7 smart heart rate measurement helps monitor heart rate status and abnormalities. [Skin Temperature] Supports skin temperature measurement and allows timed measurements. [Portable Charging Case] Includes a compact charging case for convenient charging. [Ring Protector] Includes a white silicone ring protector. Place the protector on the ring while wearing it to help prevent friction and scratches. [Nighttime Sleep Insights] Tracks continuous night rest for holistic wellness trends