This item is an upgraded belt-clip for use with Audio-Technica ATW-T210 and ATW-T210A wireless microphone packs.
The original equipment wire-type belt clip was basically a joke, just a folded piece of springy wire.  It would fall off the first time it was used and was barely functional.

The features of this improved accessory clip:
-Light weight 
-Easy-to-use design;  Just squeeze with thumb and release.
-Firm grip to belt, waist-band, or front/back pockets.
-Does not interfere with battery access
-Proven performance in real-life usage by both adults and children.
-Dimensionally accurate, fits snuggly to the body pack unit.
-Solid ABS plastic and spring steel construction
-Made by me in the USA

NOTE:  This item is for the accessory belt clip only.  It does not include the wireless transmitter unit.