Aetertek E-collar Dog Stop Bark Shock Collar Electric 550M Remote Range Training Shock and vibration beep Waterproof & Rechargeable receiver Easy to use,beep+ vibration+shock correction to get your dog's attention Can be used as 2 dogs' training collars Rechargeable and 100% waterproof receivers,your dogs can swim with it New electromagnetic induction way to Turn on /off the device ,more convenience It is suitable for all dog size from 15-150lbs