Bluetooth receiver with AUX output Adds Bluetooth functionality to hardwired devices Receive wireless audio via Bluetooth and connect it to a car, amp, or anything else with AUX audio input Built-in microphone for hands free calling Built-in battery charged by Micro-USB (cable included) Bluetooth Version: V3.0+EDR Bluetooth Protocol: A2DP Bluetooth Distance: 10M Interface: USB/3.5mm Powered via Micro-USB (cable included)