brand new and high quality Features: It can automaticly detects NPN and PNP transistors, N-channel and P-channel MOSFETs, diodes (including dual diodes), thyristors, transistors, resistors and capacitors, etc. The automatic shutdown function can avoid unnecessary waste, save battery energy and improve battery life. Automatically test the pins of a component and show on the display. Can detect the amplification factor and base of transistors, MOSFET for protection diodes and the forward bias voltage of the emitter transistor High test speed, valid component testingt. Except for larger capacitors, the measurement of large capacitors takes longer for time, and the standard measurement for time is 1 minute. With a battery holder, it makes more convenient for you to use it. Specification: Display: 128x64 LCD Power Supply: 1 x 9V Battery(not included) Shutdown Current: Approx.20nA Resistance Measurement: Max.50M Resistance Resolution: 0.1 Capacitance Measurement: 25pF-100mF Capacitance Resolution: 1pF PCB Size: app.7x6.20cm/2.76x2.44in Quantity: 1 Pc Note: No retail package Transition: 1cm=10mm=0.39inch Please allow 0-1cm 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 Transistor Tester