Razer Reckons Two Sensors are Better than One
"The 4G Dual Sensor System combines the best of both worlds - an optical and a laser sensor, to deliver twice the level of tracking precision," Razer explains. "By allowing calibration of mouse to the surface you’re using, it is primed to optimally track your swipes more rapidly and accurately for the best in-game performance you can actually feel. It also lets you determine the cutoff height for tracking to stop when the mouse is lifted from the surface. This is especially important for gamers who pick up their mice to accommodate wide swiping motions, such as low sensitivity FPS gamers."
The more expensive of the two -- and also Razer's flagship rodent -- the new Mamba mouse boasts a 6400dpi 4G Dual Sensor System, 1000Hz Ultrapolling / 1ms response time, up to 200 inches per second / 50g acceleration, and multi-color lighting for $130.
Coming in a bit cheaper is the new Razer Imperator built around the new dual sensor system. This one runs $80 and includes the same 6400dpi rating, seven independently programmable buttons, and a rubberized contoured thumb grip.