Features: 1) Supports both MP3 and WMA music formats 2) Multi-function one-key design 3) Built-in FM radio (optional) 4) Supports Chinese GB and Chinese Big5 and English and multi-language display 5) 7 kinds of color back-light (optional) 6) Unique necklace-shaped earphones 7) Up to 256M storage capacity for holding over 60 songs 8) Superior sound quality 9) Rapid browse of desired songs with 10 second preview 10) Over 12 hours of continuous play on 1 AAA battery 11) EQ selection: jazz, classic, rock, pop, normal 12) FM: 87.5 - 108MHz 13) LCD: 128 x 32 14) Recording sampling frequency: 8kHz 15) Recording format/time: AG8/36h (128MB) 16) SNR of analog output: >85dB 17) Power output: >5mW + 5mW 18) Dimensions: 96 x 30 x 21mm 19) Weight: 0.035g (excluding battery)