Keyboard  Height x Width x Depth:  0.94 in (24 mm) x 18.0 in (457.3 mm) x 7.62 in (193.5 mm)  Weight: 1.77 lb (805 g) w/o batteries  Mouse  Height x Width x Depth:  1.54 in (39.2 mm) x 2.43 in (61.8 mm) x 4.40 in (111.5 mm)  Weight: 2.60 oz (73.5g )w/o batteries, w/o receiver  SYSTEM REQUIREMENTS  Compatible with:  WindowsR 10 or later, Windows 8, Windows 7, Chrome OST  MK540 ADVANCED  Wireless Keyboard K540: 2 x AA alkaline batteries (pre-installed)  Wireless Mouse M310: 1 x AA alkaline battery (pre-installed)  Battery weight: 24g / battery  Keyboard  36-month keyboard battery life  Familiar key shape and feel, whisper-quiet  3 tilt positions (natural, 4°, and 8°)  Spill resistant design  Abrasion resistant key print  Advanced 2.4GHz wireless (10 meters)  Wireless encryption  Tiny USB receiver with Logitech UnifyingT Technology  On/off power switch  Caps lock indicator light  Battery indicator light  Mouse  18-month mouse battery life  Contoured shape with soft rubber grips  Full-size and ambidextrous  Advanced optical tracking  3 buttons, scroll wheel  On/off power switch