Sony Ericsson Z550i

The following is a partial list of products manufactured under the Sony Ericsson brand. Most of the models have been released under multiple names, depending on region of release, currently usually indicated by a letter added to the end of the model number ('i' for international, 'a' for the United States, and 'c' for mainland China), but indicated on some (mostly older) models by a slightly differing model number. Typically, there is one version for the European and US market, and another for the Asian market. However, some models have yet more versions. Most "Walkman" branded models are also released as a non-Walkman version. These versions usually differ only slightly. Sony Ericsson: protagonista del.