Logitech M317 Techno Mouse - Blue (910-004241) Limited Edition Designed to keep either hand happy. Soft side grips and a comfortable shapeso youll feel good, even after long hours of use. You can go for a year without battery hassles. An On/Off switch and smart sleep mode extend battery life, while an indicator light eliminates surprises.* Enjoy precise clicking and pointingon surfaces other optical mice cant handlewhile navigating your favorite websites thanks to Logitech Advanced Optical Tracking. The tiny receiver stays in your laptop. Plus, you can easily add a compatible wireless mouse or keyboardwithout the hassle of multiple USB receivers.