Retail price: ¥49,900 Practically new, as only the functionality has been confirmed. *Those who make rude price reduction comments will be blocked immediately. Size 8 (US), Size 12 (Japan) Ring inner diameter 60.3mm 【Titanium Alloy Body】Ultra-lightweight at under 4g, with a slim design of only 2.7mm thickness. Made of high-grade, durable titanium alloy, available in 3 sizes. 【10 ATM Water Resistance】Can withstand water pressure up to 100m, allowing use without issue in sweat or rain. 【Data Integration with Smartwatch】Wear the Helio Ring when exercising, resting, sleeping, or tracking recovery while wearing an Amazfit smartwatch. Whether you wear both the watch and ring simultaneously or switch between them throughout the day, you can view data from both devices in the Zepp app. Key recovery indicators such as Readiness provide even more accurate scores by integrating data from the watch and ring. 【Comprehensive Recovery Analysis】Get a Readiness score each morning based on your mental and physical recovery. You can also view a recovery summary in the Zepp app, allowing you to check all recovery data (Readiness, recovery time, sleep HRV, sleep RHR, sleep score). 【Mental/Emotional Stress Monitoring】The EDA (Electrodermal Activity) sensor on the Helio Ring measures stress by recording skin and sweat responses. 【Heart Rate Recovery】Track your heart rate recovery for 3 minutes after exercise and see how long it takes to return to your resting heart rate. 【24-Hour Health Monitoring】24-hour monitoring of heart rate and stress levels. Detailed tracking of sleep stages, sleep quality, sleep breathing quality, and nap tracking is also available. 【Equipped with 4 Sports Modes】Real-time tracking of sports data such as steps, calories burned, distance, pace, and heart rate during workouts. After workouts, professional data (VO2 Max, recovery time, training effect, training load, etc.) is displayed in the App. 【Link Apps and Share】Workout data can be synchronized to Google Fit/Apple Health/adidas Running/komoot/Strava/Relive through the Zepp app.