Product Description Display Type: Dual color LCD Memory: 128MB, 256MB, 512MB, 1G, 2G, 4G Choices. Music File: MP3, ACC, WMA, upgradeable for future music formats; PC and Mac compatible Lyric Reading: YES A-B Reading: YES Outlook: Pink, Beige, Ivory, sliver and fancy colors for choice. Timber: Jazz, Normal, Classic, Popular, Bass and five more equalizer. Total harmonic distortion: =0.05% Earphone: Hi-fi Radio: Automatic FM, 76-96MHz/87-108MHz, 20 stations preset. Power Source: Inlaid lithium battery Bus Writing speed: 400 KB/sec Multiple Play Mode: Normal, Repeat one, Repeat all. Record time: ultra-fine 8~30 hrs choices. Weight: 28g Dimension: 40X32X15mm Others: One of smallest and most economical MP3 players in the world. And the players could be clipped on the collars of the users. Model: SM01A-B Standard: CE/FCC