Samsung YP-K3 4GB Black. Player media type: flash-media, Total storage capacity: 4 GB. Display: LCD, Display diagonal: 45.7 mm (1.8 "), Display resolution: 160 x 128 pixels. Audio formats supported: MP3, WMA, Image formats supported: JPEG. Continuous audio playback time: 25 h, Battery technology: Lithium Polymer (LiPo). Weight: 50 g