Petiner No Bark Dog Training Shock Control Collar Energy Saving Petiner Bark collar sends harmless static shock to the dog whenever it barks More energy saving, compared to the Basic version, save 30% More accurate,a unique identification technology will reduce the injury for dogs which coused by other sounds Includes receiver, operating manual and replaceable 6-volt battery Waring:This is Not Waterproof,Generally recommend for 15-120lbs dogs.