Engineered for riders who push their night riding the maxx d mk17 delivers an intense 4850 lumens in a refined beam pattern combining 2 x 16deg spot beams for long range visibility with new 45degndash15deg oval lens for wider cornering vision. Whether you need 2 hours of high powered light for high speed thrills or 36 hours to tackle multi day adventures the maxx d has your back. Leds 4 x white xpl2w3 ip rating ip67 max lumens 4850 battery 16000 mah li ion runtime 2 36 hours dimensions length 115mmhead diameter 54mm in the box maxx d 17 qr handlebar bracket usb c charger 3 year warranty on all of our lights and the leds inside are covered by a lifetime guarantee! Ensuring peace of mind with every purchase. Our lights are designed to last a lifetime so we carry out servicing and repairs on lights well beyond the warranty period