Palm and Cingular Wireless today announced the availability of the Palm Treo 750 smartphone. The Treo 750 is a five-band world phone running Windows Mobile. Cingular is selling the Treo 750 for $399.99 with a two-year contract, after a $100 mail-in rebate.

The Palm 750 is Cingular's answer to Sprint and Verizon's Treo 700w. The new Treo offers Direct Push Technology as well as powerful business features, including email, security, and web access on the go.