LCD DISPLAY: Provides you with a high definition digital LCD display that clearly shows current, voltage, capacity, and the number of data with accurate data and reliable values. COMPACT PORTABLE: Digital USB tester is compact and , which can be put in your bag for easy to carry, provide safe charging at anywhere. ACCURATE MEASUREMENT: Voltage range 3‑15V, current range 0.05A‑3.50A. Built in professional sampling circuit ensures the accuracy, precise and stability of the results. MULTIFUNCTION: USB tester widely compatible with USB A port devices, such as cell phones, tablets, laptops, car chargers, power packs, wall chargers, cables, etc. The maximum test number is 10 groups. CABLE QUALITY TESTING: USB voltage current tester can test the quality of chargers and cables to provide a safe charging environment for your valuable equipment. Material: plastic colour: Black Package Contents: 1 x USB voltage power meter tester 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.