The device has a high-quality plastic housing in black with a switch, which allows you to switch between current and voltage measurement. On the housing depends a short USB cable with USB plug and the housing is on the other side of the USB connector. Even the cable, the plug and the socket are high quality.
After I unpacked the device, I have the various cables measured. One can not go wrong. The instrument attached to the charger. The hanging device to be measured to the meter and that's it.
The displayed values are plausible and have then given me the solution to my problem. The instrument I could then find the best cable charger combination and now my phone is charged while driving without problems, by the way with the special USB charging cable of PortaPow.
Conclusion: A high-quality processed and easy-to-use instrument that can help one with USB charging problems much.