Although fully recharge the transmitter and receiver the first time. I put this necklace to my shepherd malinois. Right now, just with the vibrations, he realized he could do and not do. At first I said no, then again not, then I sent vibrations. He was surprised. I just used a few times the electrical current. Now, just to wear the necklace, or show the remote control, it reacts positively. Frankly cheap, while stores in Belgium were offering similar or less powerful systems for a lot more. Note that the USB cable is unique, so do not lose it or damage it if you can not reload. The receiver is sealed with a small rubber closure that is not very easy to handle, but you do it with a little patience. Really, I recommend for its price and effectiveness.
