EASYPET 1200M Remote Dog Training Collar System/Rechargeable Waterproof Shock Collar for Dogs (Small, Medium and Large Dogs) TRAIN 1,2,3 DOGS INDIVIDUALLY: Collars are rechargeable, remote controller/transmitter has large LCD display. The collar offers 50 groups of warning tones , 10 levels of vibration; 99 levels of humane static pulse stimulation (not electric shock). You can use any of the 3 corrections or combinations with or without verbal command; Vibration and shock can correct deaf dogs. SIMPLE BUT EFFECTIVE REMOTE DOG TRAINING TOOL: Pet trainer collars/devices can help you teach your puppy/puppies,young and adult dogs basic obedience commands and correct bad behaviors. Keep them from chewing,biting,digging, jumping on people, chasing cars or domestic animals or people, excessive barking. Simply push a button to get your dog under control; ULTRA REMOTE RANGE: This remote dog trainer offers a remote range up to 1200 METERS in open fields. Great for outdoor sport/sport,camping, field trips or hunting purpose. RUGGED CONSTRUCTION, FULL WATERPROOF: The dog shock collar receiver has rugged construction, fully waterproof / submersible. . It has a rechargeable battery that lasts up to 7 days with a single full battery charge. ADJUSTABLE LEVELS OF STATIC PULSE STIMULATION: Non-electric shock levels from low to high(1-99). Higher levels can be the strong deterrent/corrector to correct stubborn large breed of dogs.