The Dual Beamer 120 provides four distinct modes of light for all of your unique riding and lighting needs. Twin high output surface mounted LED provides High Low Courtesy™ & Superflash™ modes. Two distinct bulbs can run simultaneously or individually to control lumen output and beam pattern. Two AAA batteries provide long run times so you will rarely have to think about your light. FL1 Tested: High - 6 hours (Twin 120 lumens) Low 15 hours (Single 80 lumens) Courtesy 25 hours (Twin - 105 lumens) and Superflash 70 hours (Twin - 120 lumens). Water resistance rated to IPX4 standard