Aetertek At-216C Submersible 550m Remote Electric Dog Shock Trainer Rechargeable Upgraded AT-918C dog trainer. With advanced appearance and performance. Remote is also rechargeable. Rechargeable 100% waterproof collar receiver, your dog will be happy when swim with it Auto Anti bark feature/ Dog training collar with Vibration beep and 0-9 adjustable levels of Shock correction mode This listing is for 2 dogs training. You can control your dogs separately or simultaneously. New electromagnetic induction way to Turn on /off the device ,more convenience. 1 year warranty