Rechargeable remote dog training shock and vibration collar for 2 dogs Ergonomic unique designed remote control. Easy to operate as ABC Rechargeable collar receiver. Collar is water-resistant but not water-proof Correct your dog individually with a shock and vibration or correct 2 dogs simultaneously with a vibration Different colored belt(green to green, yellow to yellow) for ease of training Delivers effectively harm-free vibration and static shock corrections