TEAC MP-233 4GB. Player media type: flash-media, Total storage capacity: 4 GB, Compatible memory cards: Micro SD. Display diagonal: 71.1 mm (2.8 "). Audio formats supported: MP3, WMA, Video formats supported: AVI. Continuous audio playback time: 10 h, Battery technology: Lithium Polymer (LiPo). Weight: 74.2 g, Depth: 11 mm, Height: 92 mm