OURA Ring 5 - Size 11 silver

TCH R20 iRing - Ring Size 7 Silver 220 mAh

Porodo FitsSync Smart Ring - No. 10 (19.9mm) IP68 16mAh

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

Porodo FitSync Smart Ring - Ring Size 7 (17.3mm) IP68 Water Resistant 16mAh

TERRIFI Smart Ring Health Tracker - IP68 Ceramic Body 5-7 Days Battery

Horawaii Smart Ring - Silver #8

OURA Ring Gen3 - Horizon 5-7 Days Battery Life

Amazfit Helio Smart Ring - Size 12 Titanium Alloy