1、MULTIFUNCTIONAL TESTER: Real time detection of electrical charging status, voltage, current, capacity, electricity, power, equivalent impedance, temperature and other indicators at a glance. 2、SCOPE OF APPLICATION: This tester is widely used for quality testing of 3C digital products and is the preferred choice for digital 3C gaming enthusiasts and electronics enthusiasts. 3、FAST CHARGING: Quick recognition, widely compatible. Supports for QC2.0, for QC3.0, 2.4A, 2.1A, 1A, 0.5A, for Android DCP, fast charging protocol recognition, allowing you to understand your phone's charging status anytime and anywhere. 4、POWER OFF STORAGE, DATA GUARANTEED: Store capacity and power data when the mobile power supply is powered off, making it convenient for subsequent viewing and measuring the capacity and power of the mobile power supply. Note that other USB testers without power down storage function cannot test capacity and power. 5、4 BIT FOR MORE ACCURATE MEASUREMENT: Measuring the equivalent impedance and power of the load; Thermometer function, free switching between Celsius and Fahrenheit, using good accuracy thermistor sensors; USB 3.0 interface, compatible with USB 2.0, supports high current test, and supports USB3.0 interface portable storage device and USB disk test. Adopting a 0.96 inch IPS HD color LCD screen with a 160 degree wide viewing angle, good brightness, and long service life.