Please Note: One light is supplied that can be used as a front or rear.Features:Meets ANSI FL-1 StandardThis standard was created by the American National Standards Institute (ANSI) to give consistent performance measurements for handheld lights. Although bicycle lights are not required to follow this or any standard, Blackburn believes in offering full transparency in how the output, run time, water resistance and other performance claims are measured.Front or Rear CapableWith the push of a button, the 2’Fer can switch between a white 60 lumen front light and a red 20 lumen rear light. Holding the button for 2 seconds turns the light on and off, and pushing the button once changes modes between white solid, red solid, white flashing and red flashing. The light also remembers which mode you were last using and turns on in that mode.Excellent Side VisibilityAmazing 180 degree bezel allows for excellent side visibility.LED Fuel Gauge/Charge IndicatorA small built in LED light indicates the battery level. Green = >75%, Orange = 75-25%, Red = <25%Details:• Front = 60 Lumens, Run Time = 5 hours on flashing, 1.5 hours on solid (all measurements based on FL-1 standards)• Rear = 20 Lumens, Run Time = 5 hours on flashing, 1.5 hours on solid (all measurements based on FL-1 standards)• Charging cable included, no tools required.• Lithium Polymer battery.• Waterproof to IP-65 standard.• 3 hour recharge time.• 18g / 0.04lb each