I've been wearing these shoes everyday for over 2 years now and I'm really impressed. For the price I expected them to break or stop working after a few months but they have proven to be reliable. In that time I've only had to use it twice. The receiver unit is located in a non-insulated room ranging from -10ยฐF to 105ยฐF depending on the time of year. I am using a 1080p source (satellite receiver) with an HDMI splitter to this HDMI ethernet box, 150ft CAT5e to a 720p TV receiver. UPDATE: I've been using it for a little over 3 years. I thought the transmitter was dead but it just needed a new external power supply (5VDC). I had an extra one handy, pocketed it and we're back in business.