1.With LCD screen display will tell you instantly whether you have a dud or if you can eke out another few minutes of battery life2.The shell is made of plastic, which is full of elasticity and not breaking.3.Checks level of all 1.5V & 9V batteries.4.Three result: red=replace, yellow=low , green=good.5.Easy to read, colour coded meter indicates level.Descriptions:1.This is a digital battery tester.2.Compact size and light weight,convenient to carry and operate.3.Universal button battery checker tester for AA AAA C D 9V battery.Specifications:The battery tester may be used to test the following sizes:1.5V: AAA, MN2400, R03 AA, HP7, MN1500, UM3 C, HP11, MN1400, SP11, LR14, UM2 D, HP2, MN1300, SP2, R20,UM1 9V: PP3, MN1604, 6F22, 006PColour:BlackMaterial:ABS + electronic componentsSize:170x100x30mmPackage Contents:1 x Battery TesterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.