TEAC 4GB MP-275. Player media type: flash-media, Total storage capacity: 4 GB. Display: LCD, Display diagonal: 45.7 mm (1.8 "). Audio formats supported: FLAC, MP3, WMA, Image formats supported: JPG. Continuous audio playback time: 16 h, Battery technology: Lithium Polymer (LiPo). Weight: 31.6 g