Sony introduced new Walkman Media Players - NW-S740 and NW-S640 Features

Sony Co recently introduced their slim Walkman media player NW S840. Now the competition is getting tougher. Apple introduced its new iPod Nano with Camera and Microsoft comes with its New Zune HD player. At the same time Sony introduces two more walkman media player to compete with the other companies.Sony added 2 more walkman media players to the lineup - NW-S740 and NW-S640. Both the NW-S740