Product details:

Hand Orientation: Right Hand. Maximum dpi: 540 dpi. Power Supply: 1 x AA Battery. Distance: Up to 30 feet. Operating System Supported: Windows Vista, Windows 7, Windows 8, Windows 10, Windows RT. Mac OS X 10.5 or later. Chrome OS.

• Easy-to-reach Back/Forward buttons makes moving quickly between documents or browsing your favorite Web sites a breeze LONG BATTERY LIFE
• With up to 18 months of use from a single AA battery, you might just forget your trackball uses batteries at all EASY TO CLEAN
• Should you need to clean your trackball, removing the ball is a snap PLUG'N'PLAY CONNECTION