Microsoft Sculpt Comfort Desktop Mouse Included: Yes Mouse Interface: USB Tracking Method: BlueTrack Buttons: 6 Palm Rest: Detachable Mouse Color: Black Normal Keys: 104 System Requirement: Windows 8, Windows RT, Windows 7 Hard Drive: 150 MB Hard Drive Keyboard: 2 AAA alkaline batteries (included) Mouse: 2 AA alkaline batteries (included) USB Mac OS X v 10.4-10.x1 Hard Drive: 30 MB Hard Drive 2 AA alkaline batteries required (included) USB
