Hi-Mobile video preview of the Sony Ericsson K630. It comes with 256MB Memory Stick Micro???? (M2????) in-box and supports up to 4 gigabytes – that’s up to 3600 full-length tracks. That sounds like a lot, but the K630’s Mobile Broadband (HSDPA) capability means it only takes about 14 seconds to download a full-length music track*; up to four times faster than average on a regular 3G phone.