This transistor tester is small, lightweight and multifunction. With TFT digital screen, you can see testing data clealy and conveniently. It's of wide use and is very practical to meet different needs. Features: Made of high quality material, features stable performance and great durablity. With automatic calibration function for accurate measurement. One key operation, auto shutdown (shutdown time settable). Clear TFT digital display, easy and convenient to read. Mini size, portable and lightweigh. Multifunction tester can automatically identify components and pin arrangements, and automatically switch ranges. Used for automatic measurement of NPN and PNP transistors, Nchannel and Pchannel field effect tubes, diodes (including double diodes), resistors (including potentiometers), inductance, capacitance, SCR, batteries (0.1-4.5V), etc. Note: Size and color may be slight different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Multicolor Material: PC Display: TFT Display Power Supply Voltage: D C 9-12V Battery: 9V 6F22 Battery (Not included) Item Size: 70 * 60 * 15mm / 2.76 * 2.36 * 0.59in Package Size: 70 * 60 * 15mm / 2.76 * 2.36 * 0.59in Package Weight: 42g / 1.48oz Package List: 1 * Multifunction Transistor Tester