Kavalan USB Type-C Power Meter Tester is designed to monitor Volts, Amps and Watts and arrow on display indicates whether the power is flowing to or from the device via clear OLED display. It enables you to check the charging performance of your USB Type-C devices and measures the current being received by your USB Type-C device and also indicates the voltage of the power source as well as the power direction in charging your USB Type-C devices such as power bank, tablets, cellphones and laptops. Plug and play for easy use without driver required. Simply connect male and female end of the tester into your devices and read the data in real time. Lightweight and compact design, easy use and bring it anywhere easily.