Welcome to mingxuan2.vn ! Features: One battery case is for two 2*20700/21700 batteries. It is waterproof. Made of high quality material, which helps protect battery. The battery box container is solid and durable. Material is environment friendly. No pollution to environment. Specification: Product type: Battery Box Material: ABS Suitable: For 2*20700/21700 battery Capacity: 1 box for 2 batteries Package size: approx. 9 * 8 * 2.5 cm/ 3.5 * 3.1 * 1.0 in Package weight: 28g/ 1.0oz Package List: 2 * Battery Boxes