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Logitech® Wireless Trackball M570 supports your hand and stays in one place, so you only have to move your fingers, not your arm, to control the cursor. The wireless feature allows you to control up to six devices such as your laptop, desktop computer, or home theater PC from up to 30 feet away. 18-month battery life with indicator light and on/off button to save power. Adjustable laser sensor gives a wide range of cursor speeds. Silver and Blue.
Includes: Trackball, Logitech® Unifying Receiver, 1 AA battery, and user documentation • USB interface • Compatible with Windows Vista, 7, 8, RT, and Mac OS X 10.5 or later • 5 buttons and scroll wheel • Wipes clean • 3-year limited hardware warranty