Rechargeable Remote Receiver Collar for M81/M82 Dog Training Collar

I bought this product to help train my boy to become a new dog! The collar works as advertised and it has three different models. Beep, Vibration and dual vibration models. I use the beep as a warning and Vibration as correction! My dog get educated and respond my words quickly.Also, there is other reason I like this collar that the collar can be simultaneously recharge the remote and collar with one USE cable. Great design ! Before I bought other kind of training collar, and I think this one effective much better than the other one.