Accurate test: C, AA, AAA, D, N, 9V 6F22 batteries and 1.5V/3V coin cells. Made of durable plastic and stainless steel and powered by a single 1.55V battery. Usage: Hold the battery in place to begin testing. The two measurement points for the 9V battery are located on the bottom of the device. The battery reading will be displayed on the LCD. important: Please remove the battery when not using it for a long time. Dispose of batteries according to local hazardous materials disposal regulations. Product name:Battery tester Product weight:about 31.3g Testable types:N, D, C, AA, AAA.14500, 10440, 16340, CR2032, 9V Measuring range:1.2-4.8V Colour:Black Material:abs Size:92.2x61.4x13.5mm Package Contents: 1 * battery tester 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.