High Compatibility: Work for standard and rechargeable household batteries AAA, AA, C, D, 1.5V, 9V and button cell batteries.Good Helper: Battery checker tester expect a result almost instantly. It accurately tests the condition of batteries, and lets you know if they need to be replaced.Easy to Read: Battery checker tester activated by the battery being checked, the pointer clearly show the current battery health status accurately.Portable & Light: ABS material makes this battery tester volt checker is small and exquisite, you can put it in a pocket .[Portable Battery Tester]This digital battery tester volt checker is small and , you can put it in a kitchen drawer,desk,toolbox or in a pocket making it easy to take with you wherever you go, It quickly and accurately tests the condition of your batteries, letting you know whether they need to be replaced.Color: BlackMaterial: plasticPackage Contents:4 x Battery TesterOnly the above package content, other products are not included.Note: Light reflection 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.