Sony Ericsson this week at the Consumer Electronics Show in Las Vegas rolled out two new Walkman music phones and a clamshell phone enhanced with a diamond design for a luxurious appearance.

The first in the bunch, the Sony Ericsson W350, is a Walkman phone with a flip design that lets users control music functions, such as "play," "pause," and "scroll" when the phone's flip cover is closed. This makes the phone appear like a standalone MP3 player when it's not open, according to Sony Ericsson.

The Sony Ericsson W350 is a Walkman music phone with a flip design that lets users control music functions when it's closed.
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The W350 is 10 millimeters thick -- small enough to comfortably fit in a pocket -- but comes with many features, including an application called TrackID, which tracks down the title and artist of a song recorded using the phone's microphone or tagged through the built-in radio.

Other features include stereo Bluetooth, 1.3-megapixel camera with 4x digital zoom, messaging capabilities (e-mail, text, and picture), Media Manager software for transferring favorite tracks from a computer to the phone, and the ability to store up to 470 songs.

The phone comes in two versions: W350i uses EDGE 900/1800/1900 and will be available in some markets in the second quarter of this year; the W350a uses EGDE 850/1800/1900 and will be available in the Americas around the same time.

The second Walkman phone unveiled by Sony Ericsson, the W760, has tri-band HSDPA capabilities for global roaming and high-speed data access. HSDPA stands for High Speed Downlink Packet Access, a 3G cellular technology that is capable of achieving speeds of between 8 Mbps and 10 Mbps.

Besides being a music phone, the W760 is a personal navigator with built-in GPS and mapping applications: Wayfinder Navigator and Google Maps. It also stores a lot more music than the W350 -- up to 950 songs.