Technical Details Advanced optical sensor provides smooth usage without a mouse pad On/off switch maximizes battery life Designed with 3 customizable, pre-programmed buttons Usable with either hand Product Details Item Weight: 4 ounces Shipping Weight: 11.2 ounces Shipping: Currently, item can be shipped only within the U.S. ASIN: B0000C8Y55 Item model number: 931006-0403 Batteries: 2 AA batteries required. (included)
