So you would like to connect your wired headphones to your iPhone wirelessly? PLUB is a compact Bluetooth receiver that can make that happen. It is a wearable solution that works with any headphone that receives audio through a 3.5mm cable. It has up to 5 hours of battery life.
PLUB doesn’t have fancy buttons for control. Simply plug it in, and it will pair through Bluetooth 4.1 to the nearest device. It comes with a neckband that lets you carry the device around your neck.[where to get it]