Lezyne Zecto Drive Pro LED Bike Light: high performance front or rear LED light Two white & one red LED allows swapping between directions 80 lumen front & 40 lumen rear max output Up to 5 hour front & 6.5 hour rear burn time Quick easy USB (Universal Serial Bus) recharging Side visibility doubles as power meter Tough aluminium body & bezel Bar, seat post or clothing/pack mountable Full aluminium construction & FL-1 waterproof