LOGITECH MK220 WIRELESS KEYBOARD

Logitech MK220 Wireless Keyboard And Mouse 
Keyboard:
10-key numeric keypad
Music controls
Up to 5 million keystrokes (excluding numpad key)
Key type: concave keys
Splash resistant.
2 AAA (alkaline) batteries
Mouse
Sensor Technology: Smooth Optical Tracking
Number of Buttons: 3 (Left/Right Click, Middle Click)
Scroll: Line to Line
Scroll Wheel: Yes, Optical
2 AA Batteries
Keyboard
Length: 381mm
Width: 112mm
Height: 17.78mm
Weight: 320g