Review on 🐶 F-color Dog Training Collar: Remote-Controlled 865 Yard Waterproof Collar with 4 Modes and Reflective Strap - Suitable for Small, Medium, and Large Dogs - Train 2 Dogs Simultaneously by Teresa Becker

. excellent. The receivers seem to be quite robust and quite compact compared to other receivers. Maybe up to a third, but I don't measure. The vibration is strong and I don't want to use a shock. The sound seems to be louder than other products. My dogs react immediately. Can't comment on water resistance, but it means not to be submerged in water for long periods of time. The charging port cover is pretty solid compared to others and is conveniently located next to the power button. I wish there was an indicator to show it was on all the time, but the collars glow green when activated, so that's fine. I don't like the included belt so I recycled those off the collars that didn't survive but that's purely personal preference. Addendum: just 2 weeks after purchase, a collar was not charged. I contacted support and after a few questions they sent me a brand new receiver. That kind of customer service certainly makes a big difference, I will definitely review other products. Thanks for your help!