XUEMEI Made of high-quality ABS insulation plastic, lightweight and compact, convenient for battery checking. Practical Battery Checker: Maximize your battery usage 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. Easy to Use: Simply place a battery into this battery detector, it will show you quickly the status of your batteries health, 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 1.55V button cell. Specifications: color: as show Material: ABS insulation plastic Working Temperature: 0C ~ 40C Self-Powered: No need internal battery for operation. Tri-color meter indicating the battery's capacity Green zone - "good" - 1.5V-1.2V | 9V-6.3V Yellow zone - "weak" - 1.1V-0.9V | 5.4V-4.5V Red zone - "poor" - 0.8V-0.7V | 3.6V-1.8V Package Includes: 1 x Battery Tester