1、MULTI FUNCTION: Mainly used to detect USB voltage, current, power, capacity power, timing and other data. At the same time, and can be used for power capacity storage and over voltage or low voltage current protection 2、LOW POWER DISPLAY: A low power display is used, which is bright and clear enough to monitor the parameters on the screen 3、WIDELY APPLICABLE: Suitable for testing the capacity and electric energy of mobile power supply, testing the maximum output current of the charger, and testing the charging speed and quality of the data cable and the charging cable 4、SIMPLE OPERATION: The voltage measurement range is 6‑35V. This USB tester is easy to carry, you can put it in your bag or pocket and use it anytime, anywhere 5、DOUBLE SIDED PLUGGABLE: Supports any plugging in the front and back directions to avoid misplugging, and no matter the front and back of your USB, you can ensure that the front of the display is displayed