LG HBM-570 Bluetooth Headset (Silver) for $14.99 shipped. Here is a screenshot for reference. Note that it comes in OEM packaging, which means no pretty retail box but is otherwise identical. This Bluetooth headset has a dual mic for noise reduction, echo cancellation and up to 5 hours of talk time and up to 150 hours of standby time. Most places have this Bluetooth headset for over $30.