"The D.T. Systems R.A.P.T. 1400 Training E-Collar provides a quick and easy way to train your dog. Its Rapid Access button provides quick corrections and can be programmed to 16 different levels of stimulation, so you'll be able to customize your dog's training. The 1400's revolutionary curved transmitter offers 3 grip positions (place on your knuckles, in your palm, or in a pistol grip) to match your preference and situation. Collar delivers Nick, Continuous, Vibration Assist, and Jump stimulations and also offers an extra mild Gentle Touch Stimulation System. MAXX-Range 360 Internal Collar Antenna System maintains clear signal recognition to the edge of the system's range. This system can expand to a 2-dog or 3-dog system with the purchase of addional add-on collar (sold separately). The collar is waterproof, rechargeable, and fits small to large dogs. Built in Magnetic ON/OFF system. Waterproof collars uses rechargeable NiMH batteries. Waterproof floating transmitters use 9V battery (not included). Imported.Manufacturer model #: RAPT 1400 COVER. Quick and easy dog training Patented, curved transmitter design and function with 3 grip positions Rapid Access button for quick corrections 16 intensity levels Nick, Continuous, Vibration Assist, and Jump stimulations Adjustable R.A.P.T. strap on transmitter Fits small to large dogs Waterproof collar and transmitter MAXX-Range 360 Internal Collar Antenna System Extra mild Gentle Touch Stimulation System Transmitter ""Lockout"" feature prevents accidental stimulation D.T. Systems Add-On Collar for R.A.P.T. 1400 E-Collar System sold separately and can be found through item search for number 2008338"