The number of keys:4
Key life:1，000,000 times
Power supply:1*AA(Alkaline batteries are recommended)
Advanced 2.4GHz wireless technology.
Multiple 1000/1600 DPI solutions to choose when using the mouse.
Built-in auto sleep function.
Easy to install, plug and play.
MINI receiver can be hidden inside the mouse, very convenient and portable.
Bright colors for option
System supported:windows 2000/XP/Vista/ Windows 7/ Windows 8