this is a listing for 3 Apple Watch chargers that all work. My husband stopped wearing his apple watch and no longer needs these chargers. They are being sold as-is which means they will come with the rubber bands on them. I have no measured each one but they are 3 different lengths. I think one of these is an official apple charger and the other two were purchased elsewhere and I do not know the brand for them Simply hold the connector near the back of the watch, where magnets cause it to snap into place automatically. conditions: good used condition