Included: 3pcs 1 X Battery Tester. Wide test range, including C, AA, AAA, D, N, 9V (6F22) batteries and 1.5V buttons. 1.5V: AAA, HP16, MN2400, R03 AA, HP7, MN1500, UM3 C, HP11, MN1400, SP11, LR14, UM2 D, HP2, MN1300, SP2, R20, UM1 various button batteries.