Features: 1HD Color LCD Display, Bidirectional Connection: USB tester has HD color digital LCD display for clear readings bidirectional connection with bidirectional charging measurement function. 2Applicable: USB tester is mainly used to detect USB C charging current, voltage, power, time, etc., and display accurate data for you in real time. It can automatically detect different fast charging protocols such as QC, PD, VOOC, etc. 3Widely Used: USB tester detects voltage range from 4?30V and current range from 0?6.5A. Widely compatible with USB C port devices such as cell phones, tablets, laptops, car chargers, power packs, wall chargers, cables, etc. 4High Accuracy: The USB C tester uses professional instrument sampling circuitry inside, plus a unique accuracy algorithm to ensure the accuracy and stability of the product, which stores multiple sets of test data for easy storage and comparison of data. 5Safety Testing: USB C power tester detects the quality of chargers and cables, providing a safe charging environment for your valuable devices. Small and lightweight, can be carried around. Package included: 1 x USB&nbspTester&nbsp&nbsp&nbsp 1 x Manual