Dog Training Collar Waterproof Shock Collars with Remote Range 1640 ft. 3 Train Modes3 Training Modes and 1+ 2 Channels: This dog training collar offers 3 individual training modes, beep, vibration, and shock, allowing you to adjust the stimulation level quickly whenever needed. Also dog training collar with a remote has a 1+2 channel design and memory function for settings, which means you can train 2 dogs at the same time without resetting it. Great for helping correct dog barking, walking, leash training, sitting, aggression,