I ordered the 4 in 1 dog training collar and when it arrived the receiver had something rattling in it. The receiver did not work at all. I contacted the seller and was told that I would get a new receiver sent out to me to replace the broken one. I was good with that as I wanted to give them the opportunity to make it right. That one finally arrived and did not work as it was not the one that went to the remote control. I have sent more emails and still no response. DO NOT USE THIS COMPANY. I am sure I will not get my refund on this order as well since my service has been bad.