I bought this on a whim to make some movies for when I'm on my motorbike, so I can share the brilliant scenery of Scotland with my friends. Reviews on other sites were generally positive so I went ahead. It came with several mounts for applications such as handlebars, helmet etc. Also came with batteries, but no data card. The internal memory is good for less than a minute.
However, 4GB SD cards are very, very cheap. 4GB is the largest it can take, giving about 2 hours storage for video at the 640x480 resolution.
Battery life is not stunning, maybe 2-3 hours with alkaline batteries, less with rechargeables or cheaper batteries. It has a tendency to switch itself off when batteries are low, with no warning - there is a beep but you won't hear that through your helmet. A flashing led when recording would be good.
The camera was easy to mount with the velcro onto my pillion footpeg hangers, but I used some cable ties just in case, with the cam pointing backwards for the motogp style of shot. The handlebar mount is too large for a standard motorcycle, so some packing required to make it fit.
The video quality is variable, it doesn't like vibration and the picture can "warble" a bit, but the resolution is fine. The biggest issue is the contrast control, especially for sunny to dull, the whole screen goes dark.
Sound quality is poor, but acceptable.
Overall I'd recommend it. It is small, easy to use and the quality is acceptably good.