Razer Diamondback 3G  

Few managed to get past the critically-acclaimed Razer Diamondback™. None will survive its successor – the Razer Diamondback™ 3G. Boasting Razer’s revolutionary 3G infrared sensor technology, the Razer Diamondback™ 3G is a fragging masterpiece, unequaled even in the most treacherous of gaming confrontations.
	1800dpi 3G Infrared Sensor The 3G infrared sensor in the Razer Diamondback™ 3G enables movement speeds at 2.25 times faster when compared to a standard 800dpi optical sensor. Before the enemy sees you, he’s been fragged.
	Seven Programmable Hyperesponse™ Buttons The Razer Diamondback™ 3G allows gamers to program button functions while Razer’s Hyperesponse™ technology reduces latency for optimum gameplay.
	On-The-Fly Sensitivity™ With On-The-Fly Sensitivity™ adjustment, you can switch sensitivity settings right in the midst of a fierce battle!

Razer DeathAdder Specifications:

•  - 1800dpi Razer Precision™ 3G infrared sensor
   - Seven independently programmable Hyperesponse™ buttons 
   - On-The-Fly Sensitivity™ adjustment
   - Always-On™ mode
•  - Ultra-large non-slip buttons
•  - 16-bit ultra-wide data path
   - 6400 frames per second (5.8 megapixels per second)
   - 60–120 inches per second and 15g of acceleration
   - Scroll wheel with 24 individual click positions
   - Zero-acoustic Ultraslick™ Teflon feet
   - Gold-plated USB connector
   - Seven-foot, lightweight, non-tangle cord
   - Approximate size: 129mm (length) x 63mm (width) x 38.5mm (height)

More information can be found HERE