The Smart Rings Charger Case and Cord is specifically designed for the Oura Ring Gen US 08 model. It features a solid black design with a magnetic closure for easy access. The charger case uses a lithium-ion battery and comes with a cord for convenient charging. This tech-style accessory is designed for unisex use and has a compact size of 3.1x3.1x1.3 inches, making it ideal for on-the-go charging. The plastic material ensures durability, while the top handle provides a secure grip for easy handling.