1. The battery box can accommodate a standard 9V battery 2. battery box with wires, easy to connect 3. This battery holder with cover and switch, Can be used as a external power source 4. With spring clip design, it is easy to install and remove a battery 5. Good replacement for corroded battery holder,suitable for electronic applications and small hobby projects Spec: Specifications: Material: Plastic Hold 1 standard 9V battery This battery holder with cover and switch, Can be used as a external power source Size: approx. 68.02 x 33.24 x 21.58mm Lead Wire Length: approx.150mm Packages Includes: 1 x 9V Battery Case