The combination of focussed and wide lenses on the Maxx D Sync MK 2 simultaneously highlights the edge of the trail, without compromising the far-reaching beam, perfect for aggressive riding on singletrack and technical terrain.4000 lumens Reflex Boost, 2500 constant6 hr recharge timeSYNC allows custom programs and controlling both helmet and handlebar lights can be simultaneously with a single remote Reflex automatically adjusts the light to increase output when riding fast then dimming for the slower sections, saving battery life.OLED display panel gives clear information light status including battery lifeOptimised Mode Selector allows rider to fine tune power and run times for the rideSmart Port+ enables the charge port to accept auxiliary accessories such as rear lights, remote switches, Support Cells and to use your light as a power bank to charge USB devicesEasy to read Fuel Gauge for monitoring run time