Enjoy sleek styling and enhanced wireless freedom with the M185 Wireless Mouse from Logitech . It features Plug-and-forget nano-receiver which you can plug it into a USB port and forget about it. With Logitech Advanced 2.4 GHz wireless, the M185 Mouse delivers the reliability of a cord with wireless convenience and freedom, fast data transmission and virtually no delays or dropouts. Plus, this mouse has the On/Off button which helps to conserve power, and a smart sleep mode extends battery life. Its contoured design feels good in either hand and offers added comfort. So get comfort and control to go with this Wireless Mouse which is precise and responsive. Device Type: Mouse Connectivity Technology: Wireless - 2.4 GHz Color: Swift gray Wireless Receiver: USB wireless receiver Movement Detection Technology: Optical Features: Nano wireless receiver Battery: 1 x AA type OS Required: Linux Kernel 2.6 or later, Microsoft Windows Vista / XP / 7, Apple MacOS X 10.5 or later Microsoft Certification: Compatible with Windows 7 Manufacturer Warranty: 3 years warranty Device Type: Mouse Wireless Receiver: USB wireless receiver Color: Swift gray Connectivity Technology: Wireless Interface: 2.4 GHz Movement Detection Technology: Optical Features: Nano wireless receiver Interfaces: 1 x USB - 4 pin USB Type A Compatible with Windows 7: Compatible with Windows 7 software and devices carry Microsoft’s assurance that these products have passed tests for compatibility and reliability with 32-bit and 64-bit Windows 7. Compliant Standards: Plug and Play Type: AA type Installed Qty: 1 Run Time (Up To): 1 year OS Required: Linux Kernel 2.6 or later, Microsoft Windows Vista / XP / 7, Apple MacOS X 10.5 or later Service & Support: 3 years warranty Service & Support Details: Limited warranty - 3 years