LG HBM-520 Bluetooth Headset for $21.99 shipped.  Here is a screenshot for your reference.  It features noise reduction, dual mic echo cancellation, multi-connection, 33-foot operating range, up to  7 hours of talk time and 200 hours of standby time. Note that it comes in OEM packaging, which means no pretty retail box and marketing materials but is otherwise identical.  It usually sells for $29 or more.