Features: [4 in 1 Multifunctional] Adopts Bluetooth 3.0 Technology(Easy to pair with almost any Bluetooth-enabled audio players devices), equipped with 3.5mm audio jack(provides a simple wired connection of a variety of music players, such as, MP3 / Mp4, etc. without Bluetooth function devices), comes with built-in FM Radio Module. Also can work as a TF Card (support up to 64G) MP3 Player. [High-quality Sound Effect] Hk-101Bt Speaker owns Bluetooth 3.0 Module with with A2Dp/ Avrcp support, ensure transmitting strong signal in high quality high speed. And has High-performance of anti-interference, high-speed data transmission and stable performance, delivering clean and great high-fidelity stereo sound quality, the sound will fully fill the room. [Audio Anytime Anywhere without Bluetooth Device] Equipped with a 3.5mm AUX port, just need a 3.5mm audio line, easily available for music players (Mp3,mp4, Desktop, NoteBook, etc) or computers without Bluetooth function. Then audio comes to you anytime anywhere. [Easy to Operation] Equipped with function buttons which lets you easily control your music (Easily control Pausing / Playing, adjusting the volume, previous / next songs, etc.) and select between Bluetooth mode, USB mode, TF Card mode, AUX mode and FM mode. In addition, Hk-101Bt uses Handel Design, bringing you much convenience, for example, you can hook it on your bag, bicycle, etc. With compact portable size, easy to carry, and you can put it on your office desk, beside table, sofa, etc to enjoy wonderful music. [Long Standby Time Fully Compatibility] Built-in 1000mAh rechargeable Lithium battery lasts up to 8 hours of Music Playing Time (Almost Daylong Time) and 2400 hours of Standby Time per charge cycle. And universally compatible with most Bluetooth-enabled devices, including iOS / Android / Windows Smart phones Tablet PC, etc.