2017 KOPR Hi Definition Acoustic Bluetooth Speaker 3.0 Portable Wireless HandsFree Streaming Sound System Hi Definition 3-D Sound for Streaming music from any device compatible with bluetooth, memory card, or aux Hands Free Calling with enhanced feedback and noise cancellation technology to allow for clear conversation using any handsfree enable device Sleek Clean Design blends with any surrounding and Rechargeable Lithium Ion Long Lasting Battery Ultra-Portable Size with Stereo Quality Sound Whole Room Acoustic Technology