🎊50% Off Smart Wearables - Waterproof Smart Ring Blood Oxygen Sleep Monitoring

Smart bracelet? Smart watch? Throw away these burdens.

7th size 17.4mm; 8th size 18.2mm; 9th size 19mm; 10th size 19.9mm; 11th size 20.7mm; 12th size 21.5mm.

Applicable system: Android 5.0 / IOS 10 and above
Wearing weight: 2.5g
Charging method: Magnetic charging
Operating temperature: -20-60℃
Storage capacity: 128kb ROM + 96kb RAM