Optimal comfort for your right or left hand with a shaped shape designed to follow the natural curve of the larger hands. The specially fastened buttons guide your fingers to an ideal position, while the extra palm support provides comfort throughout the day._x000D_Gain the resilience and reliability that comes from the # 1 world leader in mice and keyboards. Whether you are using the M190 with a laptop, desktop, at home or on the go, this is a mouse you can count on. _x000D_Work wirelessly and move freely - from a distance of up to 10 meters - with virtually no delays or interruptions. No cables mean clutter in your office - and easy transfer from one workplace to another._x000D_Navigate more easily with a controlled line-by-line scrolling experience. The optical sensor gives you smooth and precise cursor control on almost any surface. This means precise mouse movements without annoying lost clicks._x000D_Enjoy 18 months without use worries. The power save function starts automatically when you are not using the mouse._x000D_It works straight out of the box - just plug in the USB tuner and you're ready to go.