Cateye Duplex Helmet Light, Black25.00Buy!£GoOutdoors.co.ukDelivery: in United Kingdom ReportLightweight - only 49g Long rubber attachment strap, turns 360 deg. Activated by pressing rear light lens only 2 X AAA batteries - much longer runtimes Much more economical in more→the long term Front flash / rear flash or front constant / rear flash modes Mode: Output, Runtime FRONT: 15 Lm / 30 Lm Constant: 15 Lm, 100 hrs Flashing: 30 Lm, 100 hrs REAR: 10 Lm