The 3D SlimFit headband integrates the HeadLamp's electronics directly into the performance fabric, giving you a comfortable fit with no bounce or slip. This is perfect for fast-paced adventures like trail running and cycling and precise activities such as climbing and summit scrambling.Four lighting modes put you in control, while the USB charging delivers a reliable battery-free performance that can be charged remotely from a power bank during overnight and multi-day trips. The durable materials and IPX4 water resistance ensure that the BioLite HeadLamp 425 can take what you throw at it, giving you full confidence when exploring after dark. 3D SlimFit technology - slimline electronics are weaved into the performance headbandMoisture-wicking smart fabricUltralight - weighs just 85 gramsUltrathin front - just 9mmBack battery compatible with Pass-Thru chargingMicro-USB chargingFront panel tilts downward for easy map readingEasy-adjust clipsIPX4 water resistanceLighting modes: White spot, white strobe, white flood, red flood, spot + flood, rear red flood, rear red strobeLumens: 425Beam distance: 85mBurn time (hours): 4 high, 60 low1000 mAh li-ion battery recharges via micro USBBattery indicator: 4 LED indicator shows battery levelWeight: 78g More info