Smart Ring Waterproof Heart Rate Blood Oxygen Sleep Magnetic Charging

Product information:
Applicable people: Teenagers
Operation mode: Touch
Wireless distance: 5m (inclusive)-10m (inclusive)
Wristband material: Stainless steel
Packing List: smart ring, manual, charging cable function
Color: pink, gold, silver
Type of communication: plug-in card not enabled
Battery life: less than 7 days
Charging Method: magnetic charging
Waterproof grade: 30 m waterproof
Watchcase material: Plastic
Appearance size and weight: 16.5cm * 7.5cm * 3cm, 0.2kg
Battery capacity: 190mAh
Screen Type: IPS
Watch strap style: Modern style buckle