Jabra BT5020 Bluetooth Headse for $19.99 shipped.  Here is a screenshot for your reference.  It comes in OEM packaging, which means no pretty retail box but is otherwise identical.  This headset features up to 10 hours of talk time and 300 hours of standby time, 33-feet operating range, multi-point connections to connect two devices at the same time.  Most places have it for over $50.