Having just bought an expensive motorbike, decided it would be a good idea to buy a Contour Roam helmet camera and, Amazon seemed to have the best offers at the time. Though not the easiest thing to fit to a motorcycle helmet, I decided to fit it with the car windscreen mount I bought at the same time. Have tried the camera fixed onto the front mudguard of the bike. Bought a 32 GB micro card and, while waiting for the delivery, used an 8 GB card, used camera with the 8 GB card for a 100 mile round trip and, when I got home, there was a little space on the card and, the battery still had life in it. Even done a 2 hour trip to London and it was still recording. The picture quality on playback is very good, once you get used the "fish eye" effect of bending when the picture is close to. When paused, it is possible to pick out number plates etc,. Main reason for buying this product was my daily use of the bike and, the frequency of motor bikes getting cut up and/or being involved in accidents when car drivers say "I DIDN'T SEE YOU" so, now I can have video evidence to produce if necessary for a claim or, to show possible fault and cause. Am very pleased with how it has worked on long and short trips, I use it nearly every day for at least four trips. Battery has had a lot of charging and micro card many reformats and seems to be receptive to my usage of it..