Bluetooth Speakers, ZEALOT S2 Wireless Portable Speaker, Desktop Computer Speaker with Enhanced Bass, Build in Microphone for Hands Free Phone Call, 3.5mm Audio Jack I/0 (Black) Clear, full-range sound you might not expect from a compact speaker,durable and simple to use. Latest bluetooth solution help connects faster, more stable, compatible with all your bluetooth-enable devices, and Outstanding connection range of up to 10 meters. Built-in microphone enables use this wireless bluetooth speakers as a speakerphone,you can enjoy hands-free calling. Multifunctional, TF card music play, audio line-in/line out, USB memory music play,etc. Up to 24 hours of music playing, free to enjoy yourself and do not worry about lack of electricity.