First off, very prompt delivery so happy about that.
The product itself is very good - very very bright: quite a blinder! In actual fact it came in handy when using it with my Canon 550D; gonna use it at a night event so will see how it pans out.
Uses 4x AA batteries, and the unit does get quite warm so do be careful.
Also for those worried about hooking up multiple things to a camera with one hotshoe: dont worry, it comes with an extra bracket which is fab so a mic and light can go on at the same time. And its not too heavy neither!
Thumbs up, a must buy for those needing light with their camera.