The M600 supports push email, document editing and PC synchronisation amongst other features.

The M600 has a new special type of full QWERTY keyboard below the display, on the phone itself.

The M600 runs the Nexperia PNX4008 ARM9 208 MHz processor[1] from Philips and has 64MB RAM and 128MB Flash ROM.

The M600 is marked "EOL" (End of Life) less than two years after introduction by Sony Ericsson and therefore is considered a finalized product and will not receive any further firmware updates despite numerous bugs being reported by M600i users.

Connectivity has been an ongoing problem with the UIQ3 suite of phones from Sony Ericsson and the Mac OS X iSync utility that Mac users use to synchronise a mobile phone with the computer.