Description Wide application: Works with all 1.5v batteries, AA, AAA, C, D, button cells, and 9v batteries Accurate and easy to read: Analog display needle moves on a color-coded, calibrated scale to quickly identify "good" (green), "low" (yellow), and "replace/recharge" (red) battery status. Function: Can be used to quickly test the capacity of battery. Easy to carry: Compact and small size, easy to carry around, you can use anytime and anywhere. No power: No battery needed for operation, so convenient to use. Use: Perfect for someone who uses regular or rechargeable batteries on a regular basis Features *Easy to read *Quickly test battery level *No battery needed for operation *Compact size and lightweight,easy to carry *Clear to read, the analog display needle moves on a color-coded Specification Size: 11x6x2.5cm Color: Black Material: ABS Tips: Please allow 1-3cm error of measurement. Photo color might be a little different from the actual product due to color display of different monitors. Product Includes: 1x Battery tester Key