Belt clip (or pocket clip if you're like me) for all of the E-Collar Technologies transmitters. Personally, I think this is essential if you're buying an E-Collar because you want quick and easy access to the transmitter at all times. Having it on a lanyard around your neck or wrist allows for too much swinging and swaying. The belt clip keeps it in one place.
I also highly suggest pairing this with the E-Collar Technologies brand Gear Keeper because the transmitter can still rotate freely while clipped to you belt or pocket. The Gear Keeper allows you to position the transmitter so you can always know right where the buttons are. *See pictures for example*
