Hyper-fast scrolling and laser precision in a mouse that’s ready to do business with your Bluetooth®-enabled laptop. Bluetooth® wireless technology No receiver or cable needed—you’ll enjoy a fast, reliable connection (up to 30 feet/10 meters) wherever you go, without hassle. . Hyper-fast scrolling You’ll fly through long documents and Web pages with a single spin. Click-to-click scrolling gives you the precision you need when navigating lists, slides, and images. Excited about hyper-fast scrolling? . Laser tracking Laser precision means you’ll enjoy smoother tracking on just about any surface.* Curious about cursor control? Learn more. . Efficient power management The low-battery indicator helps eliminates surprises. The smart sleep mode and On/Off switch extend battery life**.Big on battery life? We are, too. .* The laser sensor does not work on glass or mirrors. If you’re looking for a mouse that will track on glass, click here. ** Battery life may vary based on user and computing conditions. Hyper-fast scrolling One spin is all it takes Scroll. Lift finger. Repeat. And repeat. And repeat. Sound familiar? If you’re tired of inch-worming through long documents and Web pages, take hyper-fast scrolling for a spin to fly instead of crawl. See all mice with hyper-fast scrolling Scroll a lot? Your spreadsheets and documents are getting longer. Your digital photo and music libraries are bursting at the seams. And you’re glued to long Web pages that have you scrolling and scrolling and …. To get through it all, you’re doing a whole lot of scrolling. We’re talking 26 feet of it in your average eight-hour day, according to a Logitech study. That’s where hyper-fast scrolling comes in. From zero to line 10,000 in 7 seconds When you need to do some long-distance scrolling, hyper-fast scrolling unleashes the speed demon inside. What’s going on under the hood? The ratchet-scrolling mechanism you’re used to retracts so the wheel can spin with virtually no friction. Seven seconds. That’s how long some of our scroll wheels spin freely—speeding you through hundreds of pages or thousands of rows. And, oh yeah, it’s got precision handling too. With normal click-to-click scrolling, you can navigate your lists, slides, and images with the line-by-line control you need. Powering your mouse The power of convenience For you, having a wireless mouse is all about convenience. Any time you need new batteries it’s a hassle. That’s why we’re hard at work figuring out ways to extend the battery life of every mouse we sell. And it’s why we make some mice that let you go more than a year without changing the batteries. Because we happen to think that fewer batteries are better for you. (And better for the planet, too.) On and on and on The longer your battery life, the less hassle you face. No lugging around batteries when you’re on the go. No wasting time and money on frequent changes. Pick a mouse with batteries that last a year, 15 months, 18 months—or even three years—and you might just forget it runs on batteries at all. See all mice with extended battery life. Charge, not change Don’t want to deal with changing batteries at all? We’ve got rechargeable mice, too. You just place your mouse in its recharging stand or plug in the USB cord when you’re done using it, and you’ll always be ready to go. Check out all of our rechargeable mice. Bells and whistles Mice that turn off automatically. Buttons that help you conserve battery life. Battery indicator-lights. Many Logitech wireless mice are designed to help your batteries last longer. By automatically putting your mouse to sleep when you aren’t using it. By offering On/Off buttons that let you manually turn off your mouse. With battery indicator-lights that help prevent surprises—so you know you can count on your mouse when you need it most. Some mice combine auto off, On/Off buttons, and battery indicator-lights. See all mice with additional battery features. Laser sensors: A controlling interest Sensing the details What does a mouse do? Fundamentally, it allows you to control your cursor. And the best measure of cursor control is the accuracy with which the mouse translates the movements you make with your hand. How precise is your mouse? Logitech mice use advanced sensors to make sure that whether you’re clicking links, dragging text, or opening new apps—that whatever you’re doing—your computing experience is seamless. We achieve precision by designing miniature sensors. These sensors take lots of little pictures of the surface below the mouse, interpret those pictures, and translate the movement your hand makes into movement on your screen. Sensitive to your needs Some people just need a mouse that works. Others need a mouse that can track on many surfaces. And gamers need a mouse that can give them game-changing precision at any hand speed. Details, details There are two kinds of sensors: optical and laser. Mice with optical sensors track the surfaces beneath them using the available light and an LED lamp. In 2004, Logitech introduced the first mouse with laser tracking. Laser sensors, compared to optical, produce far more illumination—both of the surface and of the contrast created by, literally, specs of dust on the surface—revealing a wealth of details even on glossy surfaces like highly polished wood. And that means your mouse can track motion precisely on many surfaces, without lags or jitter. Glass. The final frontier. Logitech mice that are built with Logitech® Darkfield Laser Tracking™ use the smallest possible details to create a micro-road map of the surface. That means these mice can track on glass.* See all optical mice See all laser mice See all mice with Logitech® Darkfield Laser Tracking™ See a demonstration of Logitech® Darkfield Laser Tracking™ Gaming-grade control If you’re an expert gamer, pixel-perfect tracking can mean the difference between victory and defeat. Our mice with gaming-grade laser sensors can track at speeds all the way up to 5700 dpi. So when the game is on the line, you’ll get maximum precision, blinding speed, and ultra-smooth tracking. See all mice with a gaming-grade laser. Track tested We rigorously test all of our laser mice on a wide variety of surfaces to make sure your mouse is free of tracking flaws. * Mice with Logitech® Darkfield Laser Technology cannot track on glass that is 4 mm thick or less, which is not much larger than the head of a pin. Logitech® Darkfield Laser Tracking™ Now, your mouse works where others don't - even on glass. You work and play all over the place—and that means you’re going to encounter all sorts of work surfaces. A glass desk or shiny table shouldn’t stand in your way. That’s why we created Logitech® Darkfield Laser Tracking™, featured in the Logitech® Anywhere Mouse MX™ and then Logitech® Performance Mouse MX™. Darkfield tracks on surfaces like clear glass* and lacquered desks that stump optical mice and standard laser mice. So now your mouse works wherever you do. It’s all in the details. Optical and traditional laser mice use irregularities in the surface to track the direction and speed of your mouse. The more irregularities on a surface, the easier it is for the sensor to track your movements. But use your mouse on a smooth, glossy surface like clear glass, and there just aren’t enough imperfections for your standard mouse to work. This is where Darkfield Laser Tracking comes in. Darkfield uses the smallest possible details to create a micro-road map of the surface—so you get better precision on more surfaces. Want more details on Darkfield? Read the Innovation Brief. Can this mouse do everything? Just about. Keep in mind, however, that we haven’t designed the first two mice with Darkfield Laser Tracking for gamers or for those working on laboratory-grade clean glass. If you’re making lighting-fast maneuvers and need gaming-grade cursor speed, take a look at the Logitech® G9x Laser Mouse. And if you’re working on exceptionally clean glass, you may have to wait until the dust settles. For surfaces with fewer than 44 microscopic details (per square millimeter) that are less than 5 µm wide and 1.5 µm thick—to give some context, a strand of human hair is about 100 µm wide—you may want to swipe your hand across the surface before using your mouse. But for everyone else, Darkfield Laser Tracking gives you precise cursor control on virtually any surface—even glass. *At least 4 mm thick. Click to play. System Requirements Windows-based computer Windows® XP, Windows Vista®, or Windows® 7 Broadcom/Widcomm Bluetooth® BTW 1.4.2.21+, or Windows® XP SP2 or above, or Windows® XP 64 or above Bluetooth® wireless technology Mac® computer Mac OS® X 10.3.9 or later Bluetooth® wireless technology .Warranty Information 3-year limited hardware warranty Package Contents Logitech® Bluetooth® Mouse M555b 2 AA batteries Logitech® software CD for PC and Mac® Quick-start guide Part Number PN 910-001251 Technical Specifications Bluetooth® technology Hyper-fast scrolling Laser tracking Low-battery indicator (dual-color LED) 3 programmable buttons and programmable tilt wheel 1000 dpi resolution Up to 4 months of battery life Questions? Answers? Software? It's all here. Expert help Read from thousands of FAQs. Downloads Download installation software, drivers, updates and more.... Get Support Now Logitech on your iPhone.Turn your iPhone or iPod Touch into a wireless trackpad and keyboard for your computer. Plug. Add. Forget.The Logitech® Unifying receiver. Plug it. Forget it. Add up to six devices to it.