The device contains 3 2 mega bytes of memory. In addition, it features an option of the memory stick pro. Even the Sony Ericsson K660i provides an user 9 hours of talk time and 330 hrs moment. This phone comes with a quad band technology and thus the user is given with the options of networks such as the GSM 850, GSM 900,GSM 1800 and also the GSM1900. Besides that it also has yet another system ca