Street RX Specification: 1) Built in 128MB/256MB flash memory, bulit in memory extension faucet, can expand to 1.5GB. 2) Featured North American innest style. 3) 128X64LCD Display, black background light white charactors. 4) Support all kinds of musci formats without any limit:MP3, WMA,WAV ect. 5) Bulit in FM radio. High Quality Digital recording and repeating Function. 6) Access to MAGICSTOR HDD via USB 2.0 interface 7) Smart and light Hi-fi Earphone, accompany with 5 diffrent sounds effects. 8) equipped with a fashion sports belt, highlights your personality. 9) Power supply: 1 AAA alkaline battery 10) Playing time: 18 hrs 11) Support languages: Chinese, English, French, Italian, Czech, German, Spanish, Swedish 13) Support SD/MMC Memory extension.