Belkin F5L051-ICR Retractable Comfort Mouse Infrared/Candy Red Provides most comfortable mouse shape to fit your hand, USB dongle doubles as a perch to hold mouse in place when moving from room to room. Features an all-terrain optical engine to mouse on most surfaces, Power-save mode puts mouse to sleep after 8 minutes of inactivity. Compatible with Mac computers, Includes 2 AAA batteries.