Ideal for the latest iPhone®, the Plantronics BackBeat™ 903 wireless headphones feature Altec Lansing sound technology for rich, full-spectrum stereo music and dual-mic AudioIQ® noise canceling technology for exceptional call clarity. The 906 model includes a 3.5mm adaptor to stream music from older iPod® and MP3 devices lacking the Bluetooth A2DP stereo profile. Both models let you enhance your music using the bass-boost feature or conveniently hear your surroundings with a quick tap of the OpenMic™ button. Adjustable and flexible for all-day wearing comfort, the headphones quickly fold up and slip into your pocket or bag.