NWT Oura Ring Gen 3 Charger Color Black Brand New. Never Used. Still in box. Oura Ring Gen3 Charger - Size 8 - Full Battery Charge in 60-80 Minutes - Charging Dock and USB-C Cable About this item OURA RING GEN3 CHARGER - This is the only way to charge your Oura Ring Gen3. This USB-C cable charger is size specific, so be sure to get the size that fits your Oura Ring Gen3. You can find your Oura Ring Gen3 size on the inside of your smart ring. CHARGERS ARE SIZE-SPECIFIC - Your Oura Ring Gen3 size can be found on the inside of your smart ring. CHARGING TIME - Your Oura Ring Gen 3 can take 20-80 minutes to fully charge on the Oura Gen3 Charger, depending on its current battery level. BATTERY LEVEL IN OURA APP - You can check the battery level by tapping the circular icon in the upper right-hand corner of the Home home tab. POWER CORD COMPLIANCE - The USB-A to USB-C Oura Ring Gen3 Cable cord is intended to be supplied by an external 5Vdc supply that complies with IEC 62368-1 standard. (8)