Features:1. New upgrade, goodbye to the battery era, convenient and economical with USB cable, lithium charging, safe and more economical!2. Flashlight illumination: in the dark environment, no longer afraid of invisible measurement of the location to eliminate the danger of electric shock, to assist the night measurement work.3.1000V20A special tip very fine general-purpose soft silicone meter pen, high temperature resistance and good toughness of high-quality meter pen to use with confidence4. A variety of functional measurements: AC / DC voltage measurement, resistance measurement, diode measurement, measurement of capacitance (capacitance needs to be discharged before measurement), buzzer measurement, AC / DC current measurement, temperature measurement.