tl;dr, it's a EC with Avago 3310 sensor (like the FK).





Features and Specification:
- Ergonomic right-handed design
- Plug and play - no driver needed
- Perfect lift-off distance: Only 1.5 ~ 1.8 mm
- 24-step scroll wheel
- DPI ( Dots Per Inch ): 400 / 800 / 1600 / 3200
- Adjustable USB report rate 125 / 500 / 1000 Hz
- Connector: USB
- Buttons: 5
- Length of cable: 2m / 6.6 ft
- Operating system: Win2000/XP/VISTA/7/8
- Mac OS X v10.2 after

The stock availability of our partner shops will be announced through our Facebook page www.facebook.com/ZOWIEGEAR


Source: http://www.zowiegear.com/index.php?i=news&p=62