Features LCD HD Display: This power tester pen features an LCD HD display for clear readings, and the test display values are clearly visible in dark environments. Multifunctional: This power tester pen is multifunctional, and can quickly identify the value of the detection of AC voltage, quickly identify the conductor (leakage) voltage high and low, route power failure detection. Excellent ABS Material: This power meter pen is made of excellent ABS material for the shell, which is sturdy and wear resistant, not easy to be damaged, and has a long service life. Compact And Portable: This power tester pen is small in size and light in weight, which is very convenient to carry around and use. Wide Application: This electric tester pen is widely used in mechanical repair, electrician maintenance, home use, automobile repair and so on. Specification: Item Type: Voltage Detector Pen Material: ABS Display: LCD Display Power Supply: Built In 3.7V 400mAh Lithium Battery (Included) Package List:1 x Power Tester Pen1 x Manual1 x USB Cable Package List 1 x Power Tester Pen 1 x Manual 1 x USB Cable