Review on 🐶 F-color Dog Training Collar: 865 Yards Reflective Strap Shock Collar for Dogs - Remote, Light Beep Vibration Shock - Waterproof - for Small, Medium, and Large Breed Dogs (Up to 3 Dogs Supported) by Tamika Lewis

The problem I had was that after about 6 months they stopped holding a charge. The side of the device holding it to the collar has broken off. I contacted the buyer in December 2020 and after several messages received 3 replacement units in late January or early February. I had no problems with the battery, but 2 devices have already broken in the same place. They are easy to use and work well. I think if they improved the design or made it a little more durable they would be great! Unfortunately I have to go the other way as this is the second time.