Denver MPM-4024. Player media type: flash-media, Total storage capacity: 4 GB, Compatible memory cards: microSD. Display diagonal: 109.2 mm (4.3 "). Audio formats supported: MP3, WMA, WAV, OGG, FLAC, APE, Video formats supported: RM/RMVB/AVI/FLV/3GB/MPG/VOB/MP4/MOV. Battery technology: Lithium-Ion (Li-Ion). Weight: 0.128 kg, Depth: 12 mm, Height: 75 mm