Product Advantage : Consume less power, It work continually for more than 12 hours * Music Format : Compatible work MP3 WMA and other formats * Sound Effect Format : Jazz, Classic, Rock, Pop, Normal * Play Mode : Repeat mode, unique preview mode * LCD Board : 96*26 lattice, E1 blue backlight * Earphone : Specially Designed necklace type * SNR : 90dB * Earphone Output : 5mW+5mW * Output Range : 20HZ-20KHZ * Record Sampling Frequently : 80KHZ * Supported Compression Speed : 32Kbps-256Kbps * Weight : 32g ( Not include battery ) * Battery : 1 pcs AAA Alkaline cell * Supported Operation System : Windows 98/Me/ 2000/ XP/Mac OS