Designed to make it easier for you to get the of your and lets you know when it is time to get a new one. Simply place your battery between the of the battery tester, and the pointer display will indicate that whether there is a battery need to be replaced. Features -Color: White. -Material: ABS, electronic, stainless steel. -Size: About 9.23X6.40X1.38cm/3.63X2.52X0.54inch. -Testing range: D type, C type, AA, AAA, N type, 1.55V button battery, 9V battery ( battery is not supported). -With fine workmanship and high sensitivity, quickly and easily to testing the battery. -This product is lightweight, you can carry it easily and conveniently, easy to store on tools bag. -The operation is simple, and the battery capacity can be measured immediately by plugging in the adapted battery. -Clear and bright LCD indicator, three colors means different battery life. -Made of safe and durable material, practical and safe for use. Package list: 1 tester