Descriptions:-
Brand Logitech
Battery 2 x AAA (Keyboard)
and 2 x AA (Mouse) Batteries
Features Advanced 2.4 GHz
Wireless, 128-bit AES
encryption, Fewer battery
hassles, Plug-and-play
simplicity, Whisper-quiet keys
Interface Wireless
Model MK220
OS Supported Windows XP,
Windows Vista, Windows 7

http://www.amazon.in/gp/offer-listing/B008QS7JN4/

comparison
1040
http://m.snapdeal.com/product/logitech-w…k220/11621