Bought one of these for £15 http://www.ebay.co.uk/itm/1713250329...%3AMEBIDX%3AIT . Heads up for anyone looking at them it is incorrectly described it doesn't have an intercom feature. However if you complain the seller gives you a partial refund so you get a Bluetooth headset that works with phone (calls or music) and satnavs for about £10.