Sony Ericsson will release two new Walkman phones, W710i and W850i handsets.

Sony Ericsson W710i may be favored by sports fans for its motion sensor and new fitness applications. This Walkman phone can measure your running speed, distance and time, and count your steps when walking. Sony Ericsson W710i also features 2 megapixel camera with digital zoom, walkman player supporting MP3, AAC and AAC+, FM radio and 512MB Memory Stick Micro which can be upgraded to 1GB. 

Now it is the turn of W850i Walkman phone which is the first 3G slider phone comes from Sony Ericsson. It is also a walkman phone which features Walkman player 2.0, an advanced version of the music software able to identify track data of music and check it with the Gracenote music database. Sony Ericsson W850i also has 2 megapixel camera, FM radio and 1GB Memory Stick Pro Duo for storage.

The pricing of these two Walkman phones is unknown now, but they will be launched in the third quarter of the year.