Play music through your stereo with this iSimple BluJax 3.5 mm Auxiliary Input Bluetooth Adapter for Music Streaming. The BluJax is an easy and uncluttered way to play music through a standard aux input. Simply plug it into the aux input of any car and play music from any smart device. The BluJax only requires pairing the first time—each use thereafter will reconnect automatically. Battery life is in excess of 8 hours.