Description describe: This new pen-type screwdriver can detect the voltage of live parts, including AC and DC. The power supply adopts three LR1130 button batteries (battery not included) and LED lighting, which is convenient for use after power failure. Features: It can detect whether the object is charged or not in a non-contact form, and can detect the high-voltage tap line of automobiles. Blue display screen: Values can be clearly seen even in dimly lit environments.LED Lamp lighting, easy to find lines in dim environment, can be used as emergency flashlight. Notes: 1. Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. Thanks 2. Please allow slight measurement deviation due to manual measurement. Package Contents: 1 X LCD Digital Display Voltage Test Pen Due to new airmail regulations, batteries will not be included in . Power supply: 3* LR1130 batteries (not included)