Motorola Behind-the-Neck Bluetooth Stereo Headset for $44.99 shipped after promo code EMCKFKE83. Here is a screenshot for your reference. Note that it comes in OEM packaging, which means no pretty retail box and marketing materials but is otherwise identical. It features a 30 feet range, Bluetooth 2.0 + A2DP & AVRCP, controls on the headphones, and mini USB connectivity. Most places have it for about $59.