Never run out of energy with the Oura Ring 4 Charging Case. With up to 5 charges, you’re ready for whatever and wherever life takes you. The sleek, compact design fits easily into a pocket, gym bag, or purse. It goes where you go and helps you get the most complete picture of your health by eliminating gaps in your data. USB-C cable is not included in the box. The Charging case is only compatible with Oura Ring 4 styles and is size-specific. | The Oura Ring 4 Charging Case Portable Charger | | Size 5 | Up to 5 Oura Ring charges | Black | Best Buy