[mingkee]

as a W810 successor, it splits into 2 models
K550
W610
common
GSM/GPRS/EDGE 850/900/1800/1900
bluetooth 2.0, supports wireless headphones
m2 support, with 64MB internal memory
Walkman 2.0 (W610)
2mpx cam with auto focus, LED flashlight
audio/video support: (local) mid, mp3, aac, rm, ra, 3gp, wma; (streaming, GPRS required) 3gp, ra, rm

K550im-Overview- Sony Ericsson
K550i-Overview- Sony Ericsson
W610i-Overview- Sony Ericsson

[mingkee]

Sony Ericsson K550 / W610 Specs & Features (Phone Scoop)

This mid-range bar-style GSM phone borrows the features of the popular W810 and packs them into a considerably thinner, lighter package. Features include an M2 memory card slot, 2 megapixel auto-focus camera, stereo Bluetooth, EDGE data, and quad-band GSM.

I have this phone, the only thing I don't like is the antenna, it's located on the bottom

[ace587]

any difference if its on the bottom?, reception wise?

[mingkee]

yes
I found it loses reception when hold it to press keys