Smart Ring Heart Rate Blood Oxygen Sleep HRV Heart Rate Variability Stress Test Intelligent Finger Ring Manufacturer Color:Silver turn items inside out for

turn items inside out for cold gentle machine washing when necessary

Its versatile design pairs beautifully with tan wedges

Please check the size carefully before you buy

Color: white

Features: Basic style

Smart Ring Heart Rate Blood Oxygen Sleep HRV Heart Rate Variability Stress Test Intelligent Finger Ring Manufacturer Color:Silver turn items inside out forColor: Black ,Silver ,Gold Battery Capacity: 16mAh Appearance Size: Size 7, Size 8, Size 9, Size 10, Size 11, Size 12, Size 13 Product Weight: 3. 2g Applicable Population: Elderly, Teenagers, Men, Women Wearing Method: Ring Applicable System: iOS, Android After sales Service: Store Three Guarantees Packaging List: Ring, Manual, Charger, Packaging Box Model Inner Diameter Circumference Size 7 17. 4mm 54. 6mm Size 8 18. 2mm 57. 1mm Size 9 19mm 59. 6mm