1. Various Types Of Battery Testing, Wide Range And More Practical 2. Supports Multiple Battery Models; Wide Test Range, Including C, AA, AAA, D, N, 9V (6F22) Batteries And 1.5V Buttons; 9V: PP3, MN1604, 6f22006P; 1.5V: AAA, HP16, MN2400 , R03 AA, HP7, MN1500, UM3C, HP11, MN1400, Sp11, LR14, UM2D, Hp2, Mn1300, SP2, R20, Um1 Button Batteries 3. Worried About Multiple Batteries. There Are Many Battery Models And It'S Hard To Tell Them Apart. There Is Power But There Is No Power. Are You Afraid Of Wasting It If You Throw It ? 4. Battery Power Tester, Test The Battery Directly Without Installing The Battery 5. Easy To Carry And Simple To Store Purpose: Battery Power Tester Function: Sturdy And Durable Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:A: Black Material:ABS Package Contents: 5 x Battery Testers Only 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.