The front light was first received faulty and wouldn't turn on but a Quick email to the seller and they sent out a whole new set which arrived the next day. Cracking service and a very good product.
The back light is a pretty standard bit of kit and the front light works very well, bright and good enough to see where you are going as well as be seen a mile off. I also really like the ability to change the size of the beam, works nicely when you need it to be that bit brighter or you're using it as a torch!
The fitting for the front light was a bit too small (about 25mm diameter max) and wouldn't fit round my massive handle bars but just used a cable tie to secure and worked a treat, I expect it would fit fine on most handlebars.