BTB-800 Baritone Beeper Collar - Single BeepThe BTB 800 gives you the ability to keep track of your dogs location when he is out of sight and lets you know when he has gone on point. This allows you to find the dog quickly and prevents you from making the mistake of calling the dog to you when hes on point. The BTB 800 beeper collar is lightweight and built to withstand the rugged conditions and heavy cover dogs often encounter.