Aetertek 216C Dog Shock Collar Electric Training E-collar No Barking 100% Waterproof Rechargeable Aetertek 919C 2 dogs training shock collar 100% waterproof and rechargeable collars. Collar features vibrations beep and 10 levels of progressive shock. LCD display to show the shock level,power status,dog selection and signal Easy to turn on ,turn off or sync the collars,Just put the remote and receiver closely. Collar can last 2-3 days after a full charge and remote can last more than one month. 1 year warranty is provided