Features: A perfect tool kit for home and electric industry uses. for Ideal design for testing power cables, circuit breakers, wall sockets, junction boxes, fuses, etc. Just press the button, white LED light can be for always on when there is absence of voltage. Beep sound and red flashing LED would indicate the presence of voltage. Totally insulated, no exposed metal or conductive parts. Long life and low power consumption. Compact, safety and easy to carry. Specifications: Material: ABS Color: Yellow+Blue Power supply: 2x AG10 button battery (Not included) It lasts 4-5 hours on a full charge Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x AC Electric Voltage Tester