The Blackburn(R) 2'Fer Front and Rear Bike Light is a 2-in-1 bike light with the capability to work as a front or rear bike light. Simply press the center button to change from a white light to a red light. The 2'Fer has a runtime of 1.5 hours on high mode and 5 hours on flashing mode. A battery indicator is built-in to notify you on how much power remains left. FEATURES: Front and rear capable bike light Offers side visibility with 180 degree bezel Front light mode features white 60 lumens Rear light modes features red 20 lumens Runtime: 1.5 hours on high and 5 hours on flashing Powered by lithium polymer battery Takes 3 hours to recharge light Comes with charging cable LED Battery indicator: green for greater than 75%, orange for 75% - 25%, and red for less than 25% Waterproof to IP-65 standard Meets ANSI FL-1 standard for consistent light performance measurement guidelines