LOGITECH MK540 ADVANCED KEYBOARD 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 Unifying™ 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