2. Bluetooth wireless transmission, to solve the usual long wire cable short, the trouble! Wireless, like where to put where placed. 3. You can answer the phone, connect the phone using Bluetooth, speakers with a microphone, you can easily use, zero radiation, the body good. 4. With FM radio function, use very convenient. 5.Buy HyperGear Rave Mini Wireless Beat-Driven LED Lightshow Speaker. Best Multi-Function Portable Indoor Outdoor HD Stereo Bluetooth Speaker with Built-in Microphone, Hands Free Call, AUX Input [Black] with fast shipping and top-rated customer service. Once you know, you Newegg!Buy Wireless Bluetooth Speaker - Forcovr Mini LED Best Multi-Function Portable Indoor Outdoor Stereo Bluetooth Speakers with Bass HD Surround, Built-in Microphone, FM Radio, Handsfree Call, AUX Input: Portable Bluetooth Speakers - FREE …Xeneo X21 Dual Portable Bluethooth Speakers Waterproof Outdoor Wireless Stereo Pairing with FM Radio, Micro SD Card, IPX6, Aux Jack 30W for Home, Office, Party and Travel (Pack 2 Black) 4.5 out of 5 stars. 3,592. $80.99. $80.