Newly!!! Aetertek At-918C Upgraded & Submersible Dog Shock Collar for 15-150bs Stubborn Dogs Remote Control Pet Dog Electric Shock Collar for 2 Dogs 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 0-9 adjustable levels of Shock, Beep, Auto anti bark, Strong Vibration enough to get your dogs' attention