The NUX VC Verb Core Deluxe Pedal is a reverb pedal with 8 different types including Room, Hall, Plate, Damp, Shim, Spring, Tre-Verb and Mod Verb. You can select the reverb type by using the Type knob.
The USB-C port is for firmware updates. Connect USB cable to a PC and hold the footswitch to boot-up the device and to enter the DFU (Device Firmware Update) mode. Once connected you can perform firmware updates using DFU updater software.