The K610i is an incremental improvement on the K600, incorporating the new CCD, connectors and M2 Memory Stick:
It's almost exactly the same hardware platform as the K800 (except for camera and screen), and exactly the same as the V630i (except for casing and minor details).
- The new, asinine proprietary port for headsets and data (i.e., no mini-USB jack)
- No auto-focus (the K750i 2.0Mpixel CCD without the decent lens and flash)
- M2 Memory Stick
- No FM Radio (for those of you upgrading from a K750i)