Patpet Dog Training Collar IPX7 Waterproof, Fast rechargeable Shock Collar for Dogs with 1600FT Long Remote Range, 3 Modes Beep Vibration Shock e Collar for Small Medium Large Dog(AC Adapter Included) dog shock collar EMITS A HISSING SOUND through EMITS A HISSING SOUND through a quick burst of compressed air that mimics the warning hiss of a snake or cat to distract the dog Water Stabilization and Oxygenation 【Incomparable Blind Operation for Easy operation& Mute Button Design for Professional Training】The recognizable button design allows distinguish each button by touching easily so you can easily control your dog even when he plays outdoors or in the distance