Razer COPPERHEAD 2000 dpi, Tempest Blue. Device interface: USB, Movement detection technology: Laser, Movement resolution: 2000 DPI. Processor clock speed: 1000 MHz. Mouse dimensions (WxDxH): 130 x 66 x 41 mm. Compatible operating systems: Windows 2000 / XP / X64 / MCE 2005 / Vista / Vista64, Minimum system requirements: - Available USB port - CD-ROM Drive (for drivers) - At least 35MB of hard disk space (for drivers)