Microsoft’s New SideWinder X8 Mouse unleashed
Microsoft Corp. today unleashed the SideWinder X8 Mouse, offering wireless freedom with wired performance with a 2.4GHz wireless connection that is built for lag-free play. The latest SideWinder mouse features an innovative play-and-charge system to ensure a nonstop gaming experience — up to 30 hours of active gaming on a single charge — with no need to stop the game to change batteries. The SideWinder X8 Mouse is a top performer thanks to Microsoft’s new, proprietary BlueTrack Technology that gives this mouse the best frame rate, speed and acceleration on the market and a tracking range from 250 to 4,000 dots per inch (dpi).
“When conducting our research, we found room for improving on the wireless experience for gamers, especially as it related to perceived delay or lag time of response. The SideWinder X8 Mouse will put those wireless gaming mouse fears to rest,” said Bill Jukes, product marketing manager for Microsoft Hardware. “We designed this mouse to perform to the highest gaming standards — with near-zero latency, uninterrupted gameplay and the world’s most advanced tracking with BlueTrack Technology.”
Top Features
• Reliable wireless connection built for lag-free play
• BlueTrack Technology for the best speed, acceleration and frame rates available
• Magnetic connection cable for continuous play while recharging
• Twelve buttons - seven of them programmable
• Custom profiles for specific games or programs
• Vertical side buttons for ultimate control
• Dpi switching on the fly
• Profiles for specific games or programs
• Comfortable design
• Replaceable mouse feet
The SideWinder X8 Mouse will be widely available in February 2009 for an estimated retail price of $99.95 (U.S.).2 The mouse is available now for pre-sale on Amazon.com and will ship in February when it is released.
Source- Microsoft Press Release

Rather groovy isn’t it ! I tried the optical and got so annoyed with the amount of batteries it went through Im back to the old mouse, but this one looks ok !