The Comtek ALS-216 Personal Trainer System includes an M-216 Option 1 wireless transmitter with mute switch, a PR-216 personal receiver, a CM-183 RT omnidirectional lapel microphone, a WM-183 windscreen, an MDR-J10 left and right mono headphone set, and a C-216 carrying case. It is designed to allow trainers to communicate with horse-riders while riding.
The ALS-216 has up to a 300-foot range of operation. Multiple receivers can be integrated into the system allowing multiple riders to monitor the trainer simultaneously. The included MDR-J10 headphone set includes both left and right earpieces, allowing you to use whichever side is more comfortable while riding.