AT&T and Sony Ericsson today announced the availability of the Sony Ericsson W760a Walkman phone – the first 3G Walkman phone in the U.S. The integrated accelerometer allows customers to shake or tilt the W760a to fast-forward to the next song or to simulate motion while playing video games. Dedicated A and B gaming buttons also allow customers extra control and interactivity.

Joining the popular W580 and recently launched W350 Sony Ericsson Walkman phones at AT&T, the W760a phone integrates the Walkman music player with the full suite of AT&T Mobile Music applications, including Napster Mobile, eMusic Mobile, Music ID and XM Radio.

Other features includes the Mobile Email, instant messenger, full HTML Web browsing, a 3.2 megapixel camera and AT&T Navigator for turn-by-turn directions and mapping functions. New W760a customers can demo AT&T Navigator with a 30-day free trial.

The W760a will be available for $129.99 after a two-year agreement and mail-in-rebate and comes in red, black and silver, with silver exclusive to RadioShack for a limited time.