Experience the advantages of crystal clear sound with the Comtek ALS-216 Personal Trainer. Used by top trainers and riders all over the world, this system allows trainers to communicate with riders over long distances with perfect speech clarity. Simple to use, the trainer wears the M-216 personal transmitter and lapel microphone, and the rider wears the PR-216 personal receiver and earphone. The rider can be as far away as 300 ft. and not miss a single word! What’s more, with additional receivers, multiple riders can monitor the trainer at the same time. Plus, its rugged construction ensures long-lasting durability in even the most demanding environments.