If you, someone from your family or a friend have a bicycle then strongly recommend this rear light as it is mentally bright. Does the job brilliantly and thanks that you should be safe on the road.

I have got this light myself and am extremely pleased. It's been already over one year since I bought it from Chain Reaction Cycle website for £12 and have not had any accidents at night. Before that, it got used to happen as I leave in London where traffic is quite heave and you never now who is driving behind you.
Installation

There is a manual attached to this product and is very easy to read. Every single detail how to fit it is described. Attachment itself should not take you longer then 10 minutes. All you have to do is to unpack everything from box, stretch a clamp around your seat post, add rubber pieces which stop any movements and almost done. Next step is to screw all pieces in tidily and make sure that fitted straight and on the right angle. Do it with your lamp on it.

About

Blackburn Mars 3.0 has been named after a bright red planet visible from afar. It has seven superb right red LED's inside a sleek water resistant case. Lens optics increase visible distance and side LED's provide 180 degree safety-boosting visibility. Two AAA batteries should last for 50 - 150 hours on a flash mode. That information says producent and seems to be about right. I use in my lamp energizer rechargeable batteries. Some basic one you have included in the box. Whole thing is waterproof and strongly built. Since I attached it to my bike it has not sided/moved even when doing off road.
The only, very small issue in Blackburn Mars 3.0 is when replacing batteries you need to unscrew 3 tiny screws. Is not a big deal as do not have to do it often.
It has three modes: slow flashing, fast one (almost like strobe) and viper style but up side down. My most favourite is fast flah.
Altogether

Blackburn Mars is the greatest bicycle rear light I have ever had in my life. I like absolutely everything in it. It is nicely designed and you can rely on it. Light which gives is super bright and if anyone would knock you - he should get a ban from driving. Unless claimed that was dazzled by this light.
As I mentioned in the beginning - I can highly recommend and suggest Blackburn Mars 3.0 to every single person with bicycle in home. The price is not high. It is value for money.

Please rate and leave a comment possibly
Thank you.