From Razer's Facebook page:

The Razer Abyssus Gaming Mouse | Back to the basics.

The Razer Abyssus is created for gamers looking for quality, reliability and performance in a no-nonsense, straightforward gaming-grade mouse. Designed to focus on the fundamentals of competitive gaming, the Razer Abyssus is armed with ultra-responsive buttons tuned for maximum tactile feedback.

The 3500dpi Razer Precision™ 3.5G infrared sensor is engineered with No Drift Control (aka prediction), delivering absolute accuracy of movement in-game. And when you have to adapt to your game instantly, two hardware toggles allows for 125/1000Hz polling rate and 450/1800/3500dpi adjustments without the need for software drivers.

For more information, check out here .