Logitech MK270, Keyboard Mouse, Wireless, HR - WiFi range (in meters): 10 m Keyboard Spill-resistant design - Tested under limited conditions (maximum of 60 ml liquid spillage). Do not immerse the keyboard in liquid. Adjustable keyboard height 10-Key Number pad Key type: deep profile Caps lock indicator light On Off power switch 2 AAA batteries(Alkaline Battery) Battery life: 36 months - Keyboard battery life calculation based on an estimated two million keystrokes year in an office environment. User experience may vary. 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) Battery life: 12 months - Keyboard battery life calculation based on an estimated two million keystrokes year in an office environment. User experience may vary. Mouse battery life may vary based on user and computing conditions. Više informacija na linku