Review on 🐶 Enhanced PetSpy M686B Shock Collar: Waterproof 2-Dog Trainer with Vibra, Beep & Remote Control by Quvarious Evans

Advantages: 1. The remote control is easy to use, easy to switch between the 1st and 2nd collar. 2. The buttons are conveniently located on the collars and it is very easy to connect devices to the controllers. 3. Vibration adjustable for more stubborn dogs (it wasn't adjustable on other brands I've tried) Cons: 1. Collars are plastic and loosen and/or fall off my dogs if they play, rub/roll too roughly. things, or when they scratch your throat. If the collar was made of a different material or had a better clasp, it wouldn't be a problem. 2. Since this offers 2 devices, there really should be a way to charge them at the same time, as well as a charger. I have to switch which collar charges which day because my dogs only have 2 days of battery life. 3. In my opinion, the on/off button on the collars can be completely removed. Sometimes my dogs play together and accidentally turn off the device without my knowledge. If the collars didn't come loose so often and it included the ability to charge both devices at the same time I would easily give it 5 stars. I like the functionality but it needs some work.