The Yalumi Spark Pro headlamp offers seven operating modes by utilizing multiple sophisticated beam-enhancing optical lenses. Three AAA batteries (included) power one high-output Cree white MX-6 LED for wide-angle flood illumination; one high-power Cree white XP-E LED for long-distance, focused spot illumination; and one red LED for night vision and safety signaling. The high-output Cree white LED delivers 120 lumens in floodlight mode up to 20 meters of illumination distance. It delivers 90 lumens in focused spotlight mode and throws light up to 90 meters. The maximum burn time is 110 hours in economy mode and 48 hours on maximum mode (burn time may vary based on battery life). The red LED provides a strobe light for safety signaling and spare lighting to preserve night vision. The exceptional lens qualities in the Yalumi Spark Pro are rooted in more than 16 years of experience in engineering state-of-the-art solutions for camera lenses, video lenses, scanners and other optical products. The adjustable headband with lamp-angle tilt allows aiming of the beam. Lock mode keeps you from accidentally enabling the light–and draining the batteries–when the headlamp is stored in your pack or pocket. The headlamp also is IPX4-rated for water resistance. With a compact and lightweight design, the Yalumi Spark Pro LED headlamp is ideal for outdoor activities or for technical activities where bright, precision-focused lighting is a requirement.