UP TO A MONTH OF BATTERY - Get up to a month of battery life from a single charge, the charging case keeps Oura Ring 5 powered through trips, busy weeks, and everything in between NEVER MISS A BEAT - With seamless charging you get credit for every heartbeat, body shift, and wink of sleep. You’ll have the most complete picture of your health, with fewer gaps in your data TRAVEL READY - The match-box sized case is made of the highest grade recycled aluminium. It easily fits into your pocket, carry-on, or gym bag COMPATIBLE WITH OURA RING 5 - Not compatible with any other Oura Ring generations SIZE-SPECIFIC CHARGER - Oura Ring 5 Charging Case is size-specific, so make sure to buy the one that matches your size