R02 Smart Ring, Smart Ring for Women and Men, No Subscription Fee, with a Charging Case, Supports Heart Rate, Blood Oxygen, Sleep Health Monitoring, and Sports Tracking Ring. (Pink Ceramic, 7#)

No subscription fee is needed: No more monthly bills! This smart ring does not require any app subscription fee. Enjoy all features right away, instantly unlocking core data like heart rate monitoring, sleep analysis, and 24/7 activity tracking, making health management straightforward and simple. Purchase a sizing kit: Before buying the smart ring, it is highly recommended that you purchase a sizing kit or measure your finger size according to the size chart to help you select the correct ring size for a comfortable fit. Heart rate measurement: 24/7 smart heart rate measurement lets you understand your heart rate status and monitor heart rate abnormalities, keeping track of your daily health. Battery performance: Your usage frequency determines power consumption. Basic Mode (4-5 days): Tracks only steps and basic sleep. Balanced Mode (3-4 days): Synchronizes heart rate every 60 minutes. Enhanced Mode (2-3 days): Monitors heart rate in real-time throughout the day. Requires frequent daily charging. Portable charging case: Comes with a compact charging case for charging anytime, anywhere. Nighttime sleep insights: Tracks continuous night rest for holistic wellness trends. Note: The algorithm is strictly calibrated for nighttime cycles to ensure data purity. Daily health tracking: Tracks long-term activity trends through natural arm swings. The algorithm filters out stationary hand movements to prevent data errors. Supports achieving holistic health and lifestyle goals. To avoid unnecessary returns or exchanges, please ensure the product is compatible with your needs