Avoir USB Wired Optima Mouse @ Rs. 269 Coupan code :- FREEDOMCOMP Detail Brand Avoir Product Type Mouse Extra Long USB cable Yes Compatible with win 7/vista/XP/Linux/Mac High Defination Optical Sensor 1200 DPi Ergonomic Design Yes Digital Key scroll Yes Warranty 3 Years Limited Warranty http://shopping.indiatimes.com/computers/keyboard-mouse/avoir-usb-wired-mouse-optima/40133/p_B1734932? Compare Snapdeal Rs.345/- http://www.snapdeal.com/product/avoir-optima-wired-mouse-usb/1352098? Rediff at Rs.325/- http://shopping.rediff.com/product/intex-avoir-wired-usb-mouse-optima/11859729? Naaptol at Rs.498/- http://www.naaptol.com/mouse/avoir-oval-wired-mouse-usb/p/12215417.html