Focused optics provide be-seen safety with a broad but powerful light. The integrated light sensor auto-adjusts brightness in flash mode. 100 lumens via a high-power CREE LED. Ideal for handlebar or on-bike mounting. 100LM-1.5hrs, 50LM-3hrs,5LM-15hrs, Night Flash-7 hrs, Day Flash-5 hrs. Includes a quick connect bracket and micro USB charging cable. Blendr compatible, secure bar mount available.