Connection type    Wired
Connection interface    USB
Amount of buttons    2 + scroll wheel
Sensor type    Optical
Resolution    1000 dpi
Cable length    1.1 (±5%) m
Color    Black
Product size (without package)    3.7 x 6.0 x 10.9 cm
Individual package weight    0.11 kg
Individual package size    4.2 x 12.5 x 8.5 cm
ROHS / CE    No
System requirements for PC    Windows 2000/XP/Vista/7/8, Mac OS X10