SMARTER SEEING. Aside from the outstanding light output and industry-leading usage time, the Recon HL900 increases the SpeedBeam technology, which adjusts light beam output based on riding speed; also features a light sensor to monitor ambient light source to change light output; these features help save battery power for when you need it. Brighter, longer and smarter.
Output: 900 lumens
Modes: 5, high / middle / low / auto / flash
Power: Li-Ion polymer battery (3100mAh), USB rechargeable