Aetertek AT-216C Training Anti Bark Shock Collar,Submersible, 550m/600 yds Remote Range for Dogs Advantages: Can work with 2 dogs at the same timeTwo receivers are included).You can press one button to train both dogs if needed.Also,the remote is built-in Backlight LCD Screen for Night Viewing. Leash Size Adjustable and Fit Most DogsFive modes: 10 Levels adjustable to the Shock+1 level beep+1 level vibrate+Auto Anti Bark+ Flashlight.The adjustable TPU leash is 23" (Perimeter) in length.Great shock collars for medium and large dogs. 1000 Yards Remote RangeOperational Range up to 1000 Yards,you will find your dogs easier even it runs far away from you and your dog will have a larger space to play with you.The remote transmitter is designed with a clip which can be installed on your trousers like a phone.Convenient to carry it out Saving Power Design: the remote have an automatic sleep mode to conserve battery life.The remote will awaken at once when any function buttons is pi.and Support charge the Receiver and Remote at the same time,Always ready to work. 100% WATERPROOF RECEIVER: The waterproof dog training collar will not be damaged on raining or snow day or when dogs swimming in pools, ponds, or ocean.You will have more fun with them.Buy it Risk Free.The rechargeable e-Collar for dogs covers 365 Days product Guarantee and lifetime customer service support.If you ever have any issue with your training collar,pls message us any time,we will answer within 12 hours to assist and Provide a full Replacement or Refund!