I am well pleased with the Dog Training Collar. It has many pros that I like.You are able to select which of the 2 collars you want to control. The transmitter has a battery indication the tells the strength of charge for both the transmitter and the receiver that is connected. The battery last way longer than advertised. I have been using it for 2 weeks and am still on the initial charge. It has a audible signal that my dog responds to, the vibration is effective. I have also found that the shock feature is sufficient at a level of 7% for my dog to respond. I have a long haired dog and the long anodes with the covers work well. The collar length was very long. I have a medium size dog and I had to trim the collar (then burnt the ends to prevent fraying). The collar should be long enough for any dog. The charging cable has dual terminals which allow charging of the transmitter and one receiver simultaneously.