To customers: life is full of surprises. Package Includes: 1 x Voltage Test Pen Item Name: Voltage Test Pen Material: ABS Self-test Function: Self-test Before Use to Ensure Accurate Instructions Electronic Parts Testing: Resistor, Capacitor, Triode, Diode, Commutator, Etc. Household Appliance/Wiring Inspection: Plugs, Cords, Socket, Switches, Appliances, Fuse, Light Bulbs, Etc. Discrimination of DC Polarity: Identification of Battery, Car Battery Polarity, DC Polarity Identification Battery Power Determination: Simple, Preliminary Test of Battery Power Test Range: 6-380V Features: 8 in 1, Multifunctional, LED Display Size Details: 14.8cm x 1.7cm x 2.6cm/5.83" x 0.67" x 1.02" (Approx.) Specifications: The LED lighting and screwdriver function enable you to use this electrical pen in dark environment. This electrical pen uses induction or contact detection AC 220V and sound and light prompts, which enables the disconnection of live cables to be quickly determined. It is constructed of ABS material. The length of the product is 148mm, the width is 17mm and the height is 26mm. The product is very suitable for car maintenance, industry, etc. We strive for excellence. And hope you have a nice day! Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.