The Sony Ericsson W610i phone is based on the Sony Ericsson K550 and Sony Ericsson K610i. It is a quad-band GSM phone, but it does not offer 3G (UMTS or HSDPA).
The W610i has colour options similar to the Sony Ericsson W880i. This phone uses the TrackID and version 2.0 of the Walkman player.