European Travel Adapter - Type C - USB A + USB C (CTU-9C)

Use

Have not use yet. Trip is in September

Worked great in Switzerland and France

This plug fit all the outlets my partner and I encountered in Switzerland and France, both the round European kind and the sort of diamond-shaped Swiss kind. The Swiss diamond(ish) connector is smaller than the round sockets, so you can easily plug it in, but the plug would sometimes kind of sag because the plastic part doesn't completely fill the socket. When needed I just put the USB outlets facing up and propped up the plug from underneath with books etc. We used this to charge phones, Bluetooth earphones, external phone chargers, and my laptop (through the laptop's power cord). It charged everything as quickly as you'd expect.

European Travel Adapter - Type C - Dual USB (CTU-9C)

My adapter arrived quickly and performed flawlessly in Argentina and Uruguay. Good quality and I intend to purchase more adapters from Ceptics.