Logitech MK540 Advanced RF Wireless QWERTY Keyboard and Mouse, Black Keyboard Adjustable Height : 3 tilt positions (natural, 4°, and 8°) Special Keys : Music Controls, Programmable keys Palm Rest Abrasion-resistant key print 10-Key Number pad Key type : Deep profile On/Off power switch Caps lock indicator light Battery indicator light 2 AA batteries (Alkaline Battery) Battery : 36 months ( Battery life may vary based on use and computing conditions.) Mouse Sensor Technology : Smooth Optical Tracking Number of Buttons : 3 (Left/Right-click, Middle-click) Scrolling : line-by-line Scroll Wheel : Yes, 2D, optical Connect/Power : On/Off power button 1 AA battery (Alkaline Battery)

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