Check the listing for details. AA/AAA/C/D/9V/1.5V Button Cell Battery-Volt Tester Checker For BT-168- Universal. Condition: New. Listed at 7.95 USD. Description:Features: 1. Don't need to Guess Which Batteries to Keep and Which to throw Away 2. Checks power level of all 1.5V & 9V batteries 3. Easy to read, color coded meter indicates power level 4. The battery tester may be used to test the following sizes: a. 1.5V: AAA, HP16, MN2400, R03 AA, HP7, MN1500, UM3 C, HP11, MN1400, SP11, LR14, UM2 D, HP2, MN1300, SP2, R20,UM1 b. 9V: PP3, MN1604, 6F22, 006P How to Use: 1. Place your battery between the two points of the battery tester, and the easy-to-read display will tell you instantly whether you have a dud, or if you can eke out another few minutes of battery life. 2. Three result: red=replace, yellow=low power, green=good 3. If needle does not move, check that battery is touching both contacts before assuming it is completely dead. NOTE: 1. The battery tester is activated by the battery being checked. Keep test times as short as possible, to avoid unnecessary battery drain. 2. AAA battery not included Specification: Color: Black Item size: 110*59*25mm Net weight: 51g Packing content: 1 x Battery Tester