Led Lenser's award winning German engineering and design contributes to the impressive performance of the SEO3 Headlamp. The SEO 3, with its modern design, features three high-quality LEDs with up to 90 Lumens housed in a swiveling head for flexibility. It offers a key lock to prevent the lamp from switching on accidentally and the Advanced Focus System? allows for either a wide mellow up-close beam for reading a map or powerful spot to see down the trail.Smart Light Technology? switches quickly between high and low power and a signal mode Advanced focus system Rotating head Glare free red LED light Exchangeable headband Transport securing mechanism to avoid accidental switch on High comfort level Compact lightweight design Versatile light functions LED 3 x high end LED white / 1x high LED red Luminous flux: Min 15 Lumens / Max 90 Lumens Beam distance: Min 18 m / Max 40 m Burn time: Min 40 h / Max 10/hr Energy reservoir Waterproof level: 1PX6 Included: 1 set of 3 AAA alkaline batteries, 1 washable headband, Carabiner clip for carrying, Operating instructions Weight: 3.38 oz.