This ergonomic stylish grey and black wireless laser mouse is perfect for use at home or in the office with any laptop or desktop computer. The mouse"s lightweight nature, scrolling wheel and built in side buttons (allowing you to move forward and back on webpages with great ease) make this an easy and fantastic mouse to use The wireless mouse is compatible with all systems. The mouse"s long battery life can be preserved even further through its on/off switch - and if you forget to switch the mouse off - its sleep function will automatically save its battery life after a sustained period of inactivity. Requires x1 AA battery (not included). Compatible with all operating systems including Windows 8.1 and OS X Yosemite.