A4Tech XL-750BF. Device interface: USB, Movement detection technology: Laser, Movement resolution: 2500 DPI. Bundled software: Smart-X7 Software. Mouse dimensions (WxDxH): 58.4 x 114.3 x 40.6 mm, Mouse weight: 117.9 g. Compatible operating systems: Windows 2000/XP/MCE 2005/XP (x64)/2003 (x64)/Vista (x86), Minimum system requirements: USB Port