USB-C? The thing has no connection, it's just an ashtray with light as long as the battery lasts - after that it's an ashtray without light 😉 or a broken ashtray if you try to change the battery 😄

The USB-C socket is located on the small opening flap. You open the lid, the upper part of the tab is a rotating silicone lid, it even says: USB-C😃. When charging, a small red LED next to the ear flashes; when it is ready, it lights up continuously until you unplug it.