The SEO5 is a step up from the SEO3 in terms of brightness and range. It is lightweight at only 105 grams with a front battery pack that fits snugly against your forehead. Featuring Ledlenser's patented Advanced Focus System, it offers a seamless transition from broad floodlight to focused long-distance beam. Like all SEO models the SEO5 offers the perfect combination of comfort and performance. Comes with: carabiner clip, washable headband, 3 x AAA batteries Smart Light Technology (SLT) - offers 3 different light functions (high, dim memory 15% - 100%, signal) Advanced focus system - allows easy changing between broad floodlight and focused long distance beam Detachable washable headband, tiltable lamp head, in-built red LED, transport lock Ledlenser lights are covered by a 5-year standard warranty, which can be extended to 7 years by registering the product.