Enjoy flexible Bluetooth wireless connectivity with your B&W Zeppelin Classic, Mini or Air speaker with the older 30 pin docking connector. Now using this receiver that inserts in the Aux Input socket, you can continue to enjoy your speaker dock and avoid obsolescence due to the later Apple iPhone/ipod connector not being compatible. Allows wireless connection to any Bluetooth enabled device such as iPhones, iPod Touch, iPads, Android phones, tablets, laptops and PCs.. Charging USB cable and instructions included. Typical use of 8 hours between charges or continuous if connected to charger via USB. Note: This listing is for the Bluetooth receiver only and not the stereo receiver shown in the images.