These night lights come from Exposure, a UK company with a long pedigree in componantry design through their other division USE.  Design wise these are fantastic with clever features, real power and great battery life.  This light can be helmet or bar mounted easily.

Boasting an impressive 240 lumens, this little light packs plenty of power and with it’s built in battery and cableles operation it’s a neat package.  We got it just in time for the Relentless 24 hour race and it performed really well.  Full review shortly.