The Jabra BT2040 is a compact over-the ear Bluetooth headset with in-ear earbud.  It features auto-pairing technology making it easy to pair with Bluetooth devices and an incoming call LED alert.  Instead of having a rechargeable lithium-ion battery like most Bluetooth headsets, the BT2040 runs on one AAAA battery that gives a battery life of up to 8 hours talk time and 6 months standby.  The headset has one primary multi-function button, +/- volume controls, and can be worn on either ear.  It's call handling features include incoming call alerts, voice dialing, call waiting, and call hold.