Features: Multifunctional Desktop Speakers: Wireless BT Stereo + FM Radio + Alarm Clock + TF Card U Disk Music Play + LED Display + Hands-free Call. BT 3.0 Technology: Transmission distance is up to 33 feet and can easily pair with smart phone, tablet PC and other BT-enabled audio devices. High-quality Music Enjoyment: Freely enjoy crisp and clear audio with impressive surround sound powered by high-performance 5W speaker, immerse in music world. Long Battery Life: Built-in high capacity rechargeable 1200mAh Li-battery ensures up to 8 hours music play; powered by an included Micro USB charge port. Hands-free Calling: Built-in high definition microphone enables you to receive calls easily and makes your hands free when driving or doing exercise.