By now I thought I would have at least one person comment on this device, but maybe, despite their "user reviews", they really have not sold too many of the devices. I did find reviews from seemingly reputable sources when I Googled the name of the company, so I am surprised that not one member here is among their customers. The biggest limitation I see with this device vs a typical GPS navigation device is that it requires you to have a cellular signal, which can be a problem in some parts of the country. And by having to keep the phone on, battery life in the phone might be a challenge if you cannot hook the phone to a power connection on the bike. Maybe now with this "bump" to the thread I will get some useful input.