2.4GHz digital wireless optical mouse for PC
1600dpi optical tracking mouse engine
Works at distance of up to 7 meters
Built-in mouse memory, no recording is needed after battery replacement
With battery cover release button, easy to install battery
Compact USB receiver can be hidden and stored inside the mouse
Powered by 1 x AA battery (Sold separately)
Supports Windows 7 / 2000 / ME / XP / VISTA / Mac OS
Color: Black with Green
Net Weight: 50g
Mouse Dimension (Length x Width x Height): 103 x 62 x 25 mm
1 x Wireless Mouse
1 x Receiver
I just bought 7 of them and got an even better rate. Looks similar/identical to the ones listed earlier tonight at more than twice the price here at Ozbargain.
I know there are lot of places selling these however this seems to be the cheapest.