Flipkart : Microsoft Express Limited Edition USB 2.0 BlueTrack Mouse @ 695/- List Price: 5000/- Deal Price: 695/- Free Shipping Brand Microsoft Acceleration 28 G Buttons 3 Dimensions 3.78 / 2.50 inch Features 8000 fps Imaging Rate, 72 IPS Tracking Speed, 3000000 Actuations of Button Life, Vertical Scroll Wheel, 0.99 m Cable Length Interface USB 2.0 Model Express Limited Edition OS Supported Windows: 7, Vista, XP (Excluding Windows XP 64-bit), Mac OS X v10.4, Mac OS X v10.5, Mac OS X v10.6 Part Number T2J-00013 Resolution 1000 DPI Technology BlueTrack Warranty 3 Years Microsoft India Warranty and Free Transit Insurance Weight: 73 g rediff @ 999/- Shopclues @ 999/- Ebay @ 799/-