Logitech Couch Mouse M515

Logitech claims its Couch Mouse M515 is optimized for soft surfaces such as sofas, beds or carpets. No stranger to the wonders and allure of a comfy couch, I was eager to see if it could do better than other pointing devices at navigating a PC from, shall we say, more relaxing surroundings.

Next it was time to try the mouse on a variety of surfaces, and it was able to navigate them all as if it were sliding around on a mousepad. Logitech calls the mouse “easy gliding,” and that’s a true statement. Not only is its sealed bottom resistant to dust bunnies and various fibers, it’s sensitive enough to use almost anywhere. In addition to a leather couch, a cloth couch, various blankets and sheets and a variety of carpets, the mouse was able to track perfectly on granite, slate, all types of wood, and even though Logitech doesn’t recommend it, it did a respectable job of working on a overturned glass bowl I had on the coffee table.

~ Logitech Couch Mouse M515 ~

A pleasant surprise was the Logitech “hyperfast” capability that I’ve grown accustomed to with its MX Revolution series. The Couch Mouse gives you a choice of that free-spinning hyperfast mode that works like a flywheel, letting you zip through long web pages in seconds, or press down on the mouse wheel and it goes into conventional click wheel mode. Aside from its unpleasant and unusually loud noise when you press down to click the mouse wheel, the procedure was a welcome convenience.

Besides its versatility, I like the way this mouse feels in my hand. It’s not too small and not too large, and it’s equally friendly to right-handed or left-handed users. The sound of each of its left and right mouse clicks is just right — not too noisy, but giving you appropriate tactile feedback.

Logitech Performance Mouse M950

Laser tracking that works on virtually any surface and a tiny, leave-in wireless receiver put the power to achieve in your hand.

Logitech had announced the Performance Mouse M950. It is a wireless laser mouse which boast the company’s Darkfield Laser Tracking. It also features Hyper-Fast scrolling and come with Logitech Unifying Receiver. The M950 Wireless Mouse is targeted at right-handed users as it features a right-hand shape that fit your hand and four customizable thumb buttons plus a micro-USB recharging system that lets you use the mouse when charging.

Logitech Performance Mouse M950

Regular laser tracking technology relies on the ability of the mouse’s sensor to detect the textural derails of the surface. The more irregularities a surface exhibits, the easier it is for the sensor to identify reference points that it can use to accurately measure motion. However, because high-gloss surfaces such as glass are almost completely flat, there are not enough details for a typical laser mouse’s sensor to detect.

To track on glass (that’s at least 4mm thick), Logitech Darkfield uses dark field microscopy to detect microscopic particles and micro-scratches on these surfaces., rather than tracking the surface itself. Similar to the way our eye sees the clear night sky, the mouse’s sensor sees the clean areas of the glass as a dark background with bright dots – the dust. Then, the sensor interprets the movement of these dots to track exactly where you’ve moved the mouse.

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