Edit: The keyboard supports both Bluetooth and a wired USB connection. The USB cable is not only used for charging, but can also be used for data transfer so that the keyboard can be operated both wirelessly via Bluetooth and wired. Power is supplied either via battery or USB power supply.
The keyboard layout appears to be Swiss, given the 'CH' in the product name. However, without further information on the specific layout, it is difficult to confirm whether this corresponds exactly to a standard Swiss layout.
This is a CH layout (smaller market than the DE layout, after all). Both are in QWERTZ, but we work with suppliers who offer more German than Swiss formats.