Rest your hand on the sculpted shape of Logitech Marathon Mouse M705, and you’ll see there’s much more to it than point-and-click. And with three years of battery life*, you may never have to replace this mouse’s batteries for as long as you own it. Convenience - Three-year battery life: Click more. Scroll more. Do more. Logitech Marathon Mouse M705 uses less than half the power of comparable wireless mice. That means you can go up to three full years between battery changes. * - Logitech Unifying receiver: The tiny wireless receiver stays in your notebook. There’s no need to unplug it when you move around, so your mouse is always connected when and where you feel like using it. Plus, you can easily add a compatible keyboard or number pad, or even another mouse—without the hassle of multiple USB receivers. Comfort and control - Compact, sculpted, right-hand design: You’ll enjoy a naturally comfortable grip—even after long hours of use. - Integrated thumb buttons: There’s more control within your reach. The convenient application switch makes it easy to jump from one program to the next. Separate back and forward buttons let you move quickly between Web pages*. - Hyper-fast scrolling: Fly through long documents and Web pages. One spin of the nearly frictionless metal scroll wheel and you’ll never go back to an ordinary scroll wheel. A button behind the wheel toggles between two scrolling modes: Hyper-fast for quick navigation or click-to-click for greater precision. - Laser tracking: You get smooth, responsive, precise cursor control—even on surfaces that typically cause problems for traditional optical mice, such as polished or wood-grain tables. * Tested against popular battery-powered optical and laser wireless mice commercially available as of March 1, 2009. Battery life may vary based on user and computing conditions. ** These features require Logitech software. Download it here. Images are for demonstration and may vary from actual product.