USB Multimeter Type-c Power Meter USB Ammeter Voltmeter DC3-30V/0-5.1A Support OTG/Quick Charge for Macbook and other USB-C Charger, Cables and Power Bank

Absolute junk. Internal wiring is incorrect, as the plug-in orientation of the symmetrical USB-C plug affects the display. Ammeter/current reading is also incorrect, verified using another measuring tool. (I am electrical engineer by trade.) Really, zero stars rather than one.

Found this to be a helpful product. I was searching for a multimedia tester for USB, etc.