The leuchtie german engineered led dog collar has no fiddly buttons buckles or switches simply slip it over the dogs head and the intelligent sensor switches on the collar to turn off simply slip it off the dogs head and it will turn itself off after a couple of minutes important when choosing the size of your collar measure the dogs head and not the neck the collar is designed to just slip on and off over the dogs head if your pooch loves technology and fashion then this is the colla