Avago A3050 game optical engine; 20 million high-performance Omron micro-switch. It has a perfect light efficiency system with innovation DPI lighting and indication system.
It also uses Optical Tracking Technology which provides more sensitivity for smooth and precise tracking on a wide range of surfaces. The aluminum uni-body chassis is very durable and supports Cloud Drive, macro definition, macro share.
You just have to Plug & Play It is Compatible with Windows 7, 8, Windows XP, Vista, ME, 2000 and Mac OS, or the latest system.
Here are the specifications
Item size: L133.8xW73.4xH41.8mm
Item weight: 130g
Resolution: Adjustment 50-1000-2000-3000 (Support power off memory, can be driven by specific settings)
Mouse rate: 125Hz-250Hz-333Hz-500Hz-1000Hz (Support power off memory)
Keys: 7 (Left, right, middle button, forward, back, mode button, DPI switch)
Operating Voltage: 4.25V-5.5V
Key efforts: 65g-70g
Operating Current: 60mA
only applicable in USA