LEZYNE Micro Drive 450 Bike Light, Black, One Size Type of bulbs: LED Power source: Rechargeable Li-ion Modes: overdrive, blast, enduro, economy, Femto, flash 1, flash 2, Pulse Lumens: [overdrive] 450, [blast] 300, [enduro] 150, [economy, flash and Pulse] 75, [Femto] 15 Burn time: [overdrive] 1 hour, [blast] 1 hour 30 min, [enduro] 2 hours 30 min, [economy] 5 hours 15 min, [Femto] 25 hours, [flash] 10 hours