Aetertek 216 Waterproof Rechargeable Pet Dog E-collar Shock Collar Training System Stop Bark Electric Remote Train Tool For Two Dogs 3 train modes: Warning Beep Tone, Vibration, 7 levels of adjustable Shock. Can be used up to three dog . 100% waterproof and rechargeable collars. Electric remote range up to 550M. Adjustable TPU strap, it is suitable for small, medium and large dogs weighing from 15 to 150 lbs.