The contrast is a real, metallic keychain, in which detach the designed inner part and can be used as a trolley coin. In my case it is the Peugeot Lion. It is available for many car brands. The dissolution and the recapping go easy on its own, and the chip sits solid in the trailer. My Garagist thought it was funny.
The chip works in Germany and in Switzerland, as all purchasing chips from this part of the world.