... .4 inch touch-screen supports full-screen handwriting input 2 Bluetooth 3. Ringtone: 64 chord; Ringtone format: mp3, midi 4. ... : MP3, Handsfree, SMS group sending, Voice recorder, WAP, Handwritten input, Bluetooth, GPRS download, MMS, tri-band watch phone, memory card expansion ... COLORBlack,YellowSTANDBY TIME About 100-120HoursTALKING TIME About 2-3Hours World Smallest Phone Watch With Bluetooth Mp3