D.T. Systems R.A.P.T. 1450 Remote Dog Trainer, Orange/Black 1400 yard range 16 intensity levels Expandable to 3 dogs, each with a distinctive beeper sound Revolutionary curved transmitter design and function Nick, continuous, vibration assist, and beeper mode NOTE: When using in the field, secure removable beeper cap with a piece of electrical tape or other secure measure so it doesn't get knocked off