Excellent bike cam
I was impressed with the quality of sound and video that this camera offers. There is 5 video set-ups that will allow you to record videos depending on your needs (r1-r5). Battery life is about 2 hours to 2.5 hours depending on how much you record. I purchased an extra battery just in case. Charge time varies, depending if you use a wall charger or USB charger. Wall charger takes 2 hours or so, USB charger about 4 hours for a full charge.
I do recommend purchasing a 32 GB flash drive so you never have to replace it or change it while riding.
Photo quality is really good too, I have taken a few pictures and they are very clear and vivid. This is for sure the best camera in the market. Also, the casing comes with an extra door for better sound recording etc.
I have the regular GoPro and now the HD, great improvement. GoPro will add new accessories really soon, keep checking their website.