Review on KoolKani 650 Yards Remote Dog Training Collar: Rechargeable Waterproof Obedience Trainer with Dual-Dog Capability, Adjustable Stimulation Levels, Beep Tone, and Vibration by Erin Leuenberger

This collar system is great! It has 2 features that I wanted the most and that I couldn't find in any other collar system. They had to be waterproof and the remote control had to have a separate button for each dog. I've had other systems where I had to press a series of buttons to switch from dog to dog. First I had to remember the order in which to press the buttons, otherwise it took too long. I want to be able to fix the dog immediately. I have an 85# Boxer and a 105# French Mastiff/Boxer mix. These big boys react instantly to just the vibration setting (which I set to 10). I didn't even have to use a static button. There's also a button that simply beeps, which has proven effective as well. We walk along forest trails every morning in rain, snow, sun, etc. There is a pond where they wallow in collars every morning and I have had no problems with water. Also, we got caught in a heavy downpour the other morning and the collars were fine afterwards. The remote control is a nice light green color so I can find it if I drop it. One collar is black, the other orange. Seems to charge quickly.