Eagle Tech USA Bluetooth Music Receiver Phone Adapter for Home Audio, Car Stereo and Headphones (ET-ARHS50B-BK) Converts wired speakers, car stereo system and headphones into wireless speaker & speakerphone! Stream music and make hands-free phone calls from laptops, tablets and smartphones to wired speakers, headphones and car stereos Roam freely, enjoy good music and make hands-free phone calls with dedicated media playback controls Built-in microphone, rechargeable battery, 3.5mm line-in, 3.5mm line-out, micro USB charging port Bluetooth Version: 3.0, Bluetooth Profiles: A2DP, AVRCP, HSP, HFP