EC21 Product Catalogs - sigmatel n9 http://www.ec21.com/ec-market/sigmatel n9.html Sigmatel N9http://szsigmatel.en.ec21.com/Sigmatel_N9--3288753_3288792.html Model Number N9 Basic technical parameters: Twist Type Operation frequency: 850/900/1800/1900 MHZ QUA-BAND Demention20081222