Aetertek 600 YARD REMOTE RANGE DOG TRAINING BARK CONTROL SHOCK TRAINER AUTO ANTI BARK COLLAR FOR ALL DOGS Remote training dog collar to train your dog remotely with a range up to 600 yards (approx. 550 metres); Adjustable 9 levels of shock to fit the needs of dog training; One strong vibration, humane effective approach to get your dog's attention or stop barking or other undesirable behaviors; 9 levels of beep tone correction; Rechargeable waterproof receiver; collar strap adjustable from approx 18cm to 60cm (from approx 7.1 to 24);