Newly!!! Aetertek At-918C-1 Dog Shock Collar Rechargeable Dog Bark Collar Wireless Dog Trainer 600yards Range Remote 1 Dog Training Shock Collar with Auto Anti Bark Feature, Submersible (100% Waterproof) Dog Control Collar Updated version of AT-918 dog trainer, with advanced appearance and performance Professional training collar with Rechargeable and 100% waterproof receiver Control 1 or 2 dogs separately or simultaneously, 600 yards remote control electric shock devices with 5 unique design:Auto anti bark, Vibration, Beep, adjustable Shock, big and easy to push rubber button With adjustable TPU strap length from 6-25"/15cm-65cm, suitable for all dog size from 15-150lbs, especially for medium or large hunting dogs Rechargeable dog training collar receiver with auto anti bark feature, you can control your dog manually or automatically