Aetertek At-219 New Dog Trainer with LCD for 1 Small Dog Remote Control Pet Dog Electric Training Collar with Auto Anti-bark Training, 100% Waterproof & Rechargeable Dog Bark Collar Bark collar provide professional and safe correction mode: 6-1 multi-function: auto anti bark, LCD display, beep, strong vibration, 0-18 level of adjustable shock Submersible (100% waterproof) dog trainer, latest design for immersing in water 600 yards range remote control dog training system, suitable for dog size from 15-150lbs Novel in appearance, both remote and receiver have sleep mode to save more battery life This list is for 1 dog control, can be upgraded for 2 dogs if add extra receiver