1. Polished and thin ID with cue抯 from cell phones; 2. 2.5/5G built-in memory, up to 83/166 hours of music 3. Large 128x64 Mono backlit LCD (white lettering)； 4. USB 2.0 connection for hi-speed music transfer 5. Carrying case with arm-band and clip；Pro style premium headphones 6. FM tuner with 20 presets; Record FM radio/ live sound/ voice 7. plays for 10+ hours with included rechargable Li-ion battery 8. 5 Band Adjustable EQ with Presets 9. Support WMA9/ DRM (Digital Rights Management)