Aetertek AT-219 New Version 600 Yard Remote Control Dog Training Collar Shock Vibration Auto Anti-bark for 2 Large Dog Can be used as 1-1,1-2 remote dog training shock collar (This list is for 2 dog with 2 receiver) Vibrate, Shock, Beep, Auto no bark mode, LCD display. 0-18 adjustable levels for shock Rechargeable transmitter & Rechargeable 100% waterproof collar receiver Remote control dog trainer with remote control range up to 600yards (approx. 550 meters) and signal can pass through obstacles, such as walls and fences CE,ROSH,FCC,RTTE Approved.1 Year manufacturer warranty