Trainers Warehouse Me First® v.3 Wireless Game buzzers, Great for Team Building and Educational Purposes

I ordered this product for my classroom, however I did not open it until I had planned to use it, which was about a month or two later. When I opened it, the facilitator buzzer did not work. I contacted Amazon. They referred me to the manufacturer. I contacted the manufacturer and they would not send me a new facilitator buzzer or a new set. I was told that I did not buy it directly from them so they could not help me. I sent an email to Amazon to report what I was told by the manufacturer. I have not heard anything back from Amazon. The manufacturer company would not stand behind their product. This is flawed product and not worth the money. Now I have a game buzzer set that is useless without the facilitator buzzer. Do waste your money on this product.