The display is 12864 LCD with white backlight.Powered by 3.7V lithium battery not included or 5V external power supply with USB interface (USB cable not included). Automatically detect NPN and PNP transistors, N-channel and P-channel MOSFETs, JFETs, diodes, inductors, resistors, capacitors, thyristors or other devices. Automatically test the pins of the components and display them on the display. Measure the gate threshold voltage and gate capacitance of MOSFET.Measure the current amplification factor and base-emitter threshold voltage of bipolar transistors. Short detection time: only 2 seconds. It takes more time for large-capacity capacitor detection. Display: 12864 LCD Battery: 3.7V lithium battery Model batteries: 14500(not included batteries) Item size: 7.3 x 7.1 x 1.5cm / 2.9 x 2.8 x 0.6inch Colour:As Shown Material:pc Note: Please make sure the capacitor is discharged before testing. The test pictures are for reference only, please refer to the actual object! Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * Ammeter 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.