HP USB 2-Button Laser Mouse - Works on surfaces where other optical mice don’t: glossy surfaces, opaque glass, textured surfaces, wood, etc. - More exact tracking of the Laser Mouse compared to Optical Mouse The area used in tracking is more defined since it detects smaller changes in surface texture. - Less power used with better low power and low voltage settings with the laser. - More responsive to movements due to optimization to limit the lags and latencies. - Possible Lower costs and better DPI in the future since the market for Laser Mice is increasing for mainstream users compared to mainly a Retail/Gamer market.