The D.T. Systems R.A.P.T. 1450 Remote Dog Trainer has a 1400 yard range and 16 intensity levels. Transmitter Lockout prevents accidental stimulation. The MAXX-Range 360 internal collar antenna has a 3/4-mile range. The beeper has a 450 yard audible range and 3 modes (locate, run & point mode, point only mode). System is expandable up to three dogs, each with a distinctive beeper sound. The revolutionary curved transmitter design and function includes: knuckle grip-on back of hand to free up both hands and have a quick, no look button, palm grip-in palm of hand holding like a stopwatch, and pistol grip-more traditional hold with thumb operating most buttons and trigger finger on the top button. The compact, waterproof collar uses a rechargeable NiMH battery and the floating transmitter uses.