TY-B04 is mini portable speakers, which not only support lossess audio formats, like WAV, FLAC, APE but also the high compression rate audio such as WMA, MP3, etc. What's more, the barrier-free transmission distrance of TY-B04 is within 15m, which offers you more freedom in connection. TY-B04 also has rechargeble built-in batteries, which can works for as long as 8 hours. As a top 10 audio brand in China, Tonewinner has 30+ years experience in designing and manufacturing acoustic products. As an original supplier, Tonewinner always warmly welcomes distributors, partners and customers around the world.