Yalumi Headlamp, Spark, with Advanced Aspherical LED Lens. 105 lumens design, Bright as 140 lumens output, energy saving, Batteries Included Uses sophisticated optical lens for enhanced beam and light efficiency with 3 white-light modes: economic, high-brightness, strobe White LED with 105-lumen light output and 90-meter beam length provides 187 hours burn time in economy mode and 95 hours in brightest mode Highest-quality Cree high-power XP-E LED for a bright, uniform narrow-focused spotlight beam pattern; 3 AAA batteries included Adjustable headband, lamp illumination angle tilt and lock mode to avoid accidental enabling and battery drain when stored in pack or pocket Compact, lightweight design for use in outdoor activities with IPX4 rating for water resistance