Feature: Automatic detection of zener diode 0.01-30V. Self test with automatic calibration. Support IR coding. IR waveform display. Infrared receiving instruction. Measurement results using TFT graphic display. One key operation. Auto power off (timeout settable). Built-in high capacity rechargeable -ion battery. -ion Battery voltage detection. Used to detect NPN and PNP transistors, capacitors, resistors, diodes, transistors, N-channel and P-channel MOSFETs, IGBTs, JFETs, triacs and batteries Specification: Sweep range: 0.1MHz Voltage: 3.7V Display: 160 x 128 TFT Battery: 1 x -ion battery, 3.7V, 300mAh Material: Plastics colour: As shown Package Contents: 1 x Tester 1 x USB Cable 1 x Test Clip 1 x LED 1 x Capacitance 1 x Resistance Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.