R02 Smart Ring, Smart Ring for Women and Men, No Subscription Fee, with a Charging Case, Supports Heart Rate, Blood Oxygen, Sleep Health Monitoring. (Gold, 10#)

No subscription fees are required. Say goodbye to monthly bills! This smart ring does not need any app subscription fee. Enjoy all features right out of the box, instantly unlocking key data like heart rate monitoring, sleep analysis, and round-the-clock activity tracking, making health management straightforward and simple. Before purchasing the R02 smart ring, it is highly recommended to use a sizing kit or measure your finger size according to the size chart to help select the proper ring size for a comfortable fit. 24/7 smart heart rate measurement enables you to understand your heart rate condition and monitor for irregularities, keeping track of your daily wellness. Your usage frequency determines your power consumption. Basic Mode (4-5 days): Tracks only steps and fundamental sleep. Balanced Mode (3-4 days): Synchronizes heart rate every 60 minutes. Enhanced Mode (2-3 days): Monitors heart rate in real-time all day. Requires regular daily charging. Includes a small charging case for charging at any time and any place. Tracks continuous nighttime rest for comprehensive wellness trends. Note: The algorithm is precisely calibrated for nighttime cycles to ensure data accuracy. Tracks long-term activity trends through natural arm swings. The algorithm filters out stationary hand movements to avoid data inaccuracies. Excellent for reaching overall health and lifestyle objectives!