Aetertek At-219 LCD Display Waterproof Electronic Dog Training Collar with Remote 600 Yard for Smart Pet Dog Shock,Vibration, Ultrasonic Correcting Methods 100% waterproof and submersible desigh Intelligent 18 levels of progressive shock corrections(both in shock time and voltage) to correct bad behaviors effectively. Latest individual design ,novel in appearance. Rechargeable transmitter and receiver. Can be used manually as a remote dog trainer or as an automatic anti-bark/bark control collar