There is LCD screen display and power prompt in this battery tester, which is convenient to read and the power can be seen at a glance. It does not need to install a battery, so it is convenient to use. A battery tester can measure D-type, C-type, AA, AAA, N-type, 1.5V button cell, 9V batteries, etc., but it does not support the test of rechargeable batteries. It is constructed of abs material. The length of this product is 9.2cm and width is 6.5cm. It is suitable compatible home, factory, workshop, etc. Item Name: Battery Tester Material: ABS Features: No Batteries Required, LCD Display, Power Indication Size Details: L: 9.2cm/3.62", W: 6.5cm/2.56"(Approx.) Notes: Does not support the test of rechargeable batteries. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Battery Tester