RAZER Abyssus 3500DPI 1000Hz Both Hands USB Wired 3.5G Infrared Sensor High Precision PC Gaming Mouse -Mirror Black Maximum dpi: 3500 dpi Hand Orientation: Both Hands Operating System Supported: Windows 8/ Windows 7 / Windows Vista / Windows XP (32-bit) System Requirement: PC with USB port Internet connection (for driver installation) At least 100MB of hard disk space Package Contents: Official Package List Parts: 2 years limited Labor: 2 years limited