Connection type    Wireless
Connection interface    USB
Amount of buttons    2 + scroll wheel
Sensor type    Optical
Resolution    1200 dpi
Power supply    2 × AAA
Average duration of work without recharging / changing batteries    3-6 months
Operation range    10
Product size (without package)    6.3 x 4.0 x 10.0 cm
Individual package weight    0.09 kg
Individual package size    9.3 x 9.2 x 17.7 cm
ROHS / CE    No
System requirements for PC    Windows 2000/XP/Vista/7/8, Mac OS X10