Trevi DTV 2504 M. Display diagonal: 109.2 mm (4.3 "), Display resolution: 480 x 272 pixels, Aspect ratio: 16:9. Digital signal format system: DVB-T. Number of loudspeakers: 1 pcs. Video formats supported: 3GP, AVI, FLV, MP4, MPG, Audio formats supported: APE, FLAC, MP3, WAV, WMA, Image formats supported: JPG. Battery technology: Lithium Polymer (LiPo), Input voltage: 100 - 240 V, Input frequency: 50/60 Hz