unfortunately I haven't use it
unfortunately I haven't use it because I need the charger and remote to start with, do u sell some?
Hello Mary. Yes, the arms unit is an Accessory, so you do need the controller to operate it, which can be purchased here: http://www.currentbody.com/slendertone-controller.html. Once you have the controller, you can then purchase Bottom and Ab accessoryies to use with it.