Your overall safety and visibility should not be limited by your budget, that&&';;s why we created the Mako(TM) Series.The Mako(TM) line offers three models and up to 250 lumens, not only allowing the cyclist to be seen, but allowing the cyclist to see as well. FEATURES a Lumen Output: 150 a 3 Modes with Run Times: 18:00 - 72:00hrs a Weight: 175g a Battery: Alkaline 2xAA Included a Handlebar Strap Mount with Quick Release a 150 lumen easy to use bike light a Water / Dust Resistant IP64 Rated RUN TIMES Low - 23:00 at 75 lumens High - 18:00h at 150 lumens Flash - 72:00h