Main Features:- Fashion design， convenient to use- Active chip read card/play system- No software required， plug and play- Special function: Simultaneous display of the lyrics (Format: LRC files)- High-quality speakers and sound chamber design- It's perfect Wireless Earphone Headphone，provides infinite enjoyment- It is not just a wireless headset but also a mp3， you can use it when you running， cycling， playing other sports， get rid of the lines plagued- Equipped with audio cable ，the receiver can be used as a wired earphone- Rechargeable / replace the battery， convenient and practical， the battery can be used for 10 hours continuously of listening- Suitable for: Running， cycling， playing- Listen to MP3 from SD card and TF card- With Lien-in socket， it can be used as wired headphone while connect the 3.5mm plug cable