OURA Ring 4 - Size 8 Brushed Silver

TCH R20 iRing - Ring Size 7 Silver 220 mAh

OURA Ring 4 - Stealth Ring Size 6

Ultrahuman Ring AIR - Size 12 Space Silver

Ultrahuman Ring AIR - Size 9 Space Silver 6 Days Battery Life

Horawaii Smart Ring - Silver #8

Amazfit Helio Smart Ring - Size 12 Titanium Alloy

Horawaii Smart Ring - Black #8 Heart Rate Monitoring

Anarow Smart Ring - #7 Silver

Ultrahuman Healthcare PVT LTD Ring AIR - Space Silver Size 14

Ultrahuman Ring AIR - Size 8 Aster Black