Unlocked W838 Real Metal Waterproof Watch Smart Phone(bluetooth Gprs Dual Camera) Quad Band:This phone is unlocked for worldwide use. Mp3/Mp4:It supports MP3/WAV/3GP/MP4 format, Take the phone with you and take advantage of personalized mobile entertainment! JAVA :Built-in Java technology means you can get the latest Apps to use on this phone. Whether for business or pleasure, this phone provides a great platform for any Java-based application you want to run. The phone supports 850/900/1800/1900 MHz. Enjoy worry-free travel wherever you go.