Aetertek AT-918 Remote Control Dog Training Shock Collar For 1 Dog With 9 level of Shock, Rechargeable and Waterproof Submersible (100% waterproof) dog trainer, can be immersed in water when swim As 1 or 2 dog training system, this list is for 1 dog shock collar with 1 receiver Vibrate, 0-9 adjustable levels of Shock, Beep, Auto anti bark Remote control range up to 600yards (approx. 550 meters) for all dog size from 15-150lbs CE,ROHS,FCC, RTTE Approved. 1 Year warranty