The HeadLamp expertly blends a light, compact construction with powerful performance. With its 3D SlimFit headband which incorporates the electronics, the stretchy moisture-wicking band ensures a slimline fit that looks and feels great. The USB-rechargeable design means no batteries are required. Seven light modes provide plenty of lighting options, with a maximum beam distance of 85 metres. The 425 is the middle product in BioLite's series of head torches and carefully balances power with weight. It is ideal for mountain hikes, trail runners and general adventurers who need expert levels of lighting control to help them stay safe in after dark adventures. Features: 3D SlimFit technology - slimline electronics are weaved into the performance headband Moisture-wicking smart fabric Ultralight - weighs just 78 grams Ultrathin front - just 9mm Back battery compatible with Pass-Thru charging Micro-USB charging Front panel tilts downward for easy map reading Easy-adjust clips IPX4 water resistance Lighting modes: White spot, white strobe, white flood, red flood, spot + flood, rear red flood, rear red strobe Lumens: 425 Beam distance: 85m Burn time (hours): 4 high, 60 low 1000 mAh li-ion battery recharges via micro USB Battery indicator: 4 LED indicator shows battery level Weight: 78g Max Output 425 Lumens Easy one-hand tilting and NEW larger power button NEW rear red light with red solid or strobe mode for added visibility 60 hours on LO, 4 hours on HIGH 1 hour reserve mode alerts you when power is low.