Product Information: Made of high-quality ABS insulation plastic, and compact, convenient for battery checking. Practical Battery Checker: Maximize your battery ge by testing for dead batteries and reducing unnecessary waste. LCD Screen Display: Easy-to-read analyzer will accurately show whether the battery is in poor, weak, or good condition of voltage. : Simply place a battery into this battery detector, it will show you quickly the status of your batteries , No battery power required for operation. Wide Application: Ideal battery capacity testing tool can be used to test different types of household batteries like AA, AAA, C, D, 9V battery and button batteries. Specification: Material: ABS Plastic Package Included: 1 x Battery Tester Note: 1. Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures. 2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm) Thanks for your support :)