The Jabra BT4010 is a Bluetooth 2.0 headset that is compatible with any Bluetooth enabled device. Smart Display, which is a small LCD display on the headset, allows you to check Bluetooth connection status, battery level and call status with just one look. Digital Signal Processing called eSCO(Extended Synchronous Connections), which improves voice quality of audio links by allowing retransmissions of corrupted packets, provides a clear reception, and also featured is auto pairing which allows for instant connectivity with your mobile device. Talk time is rated at 6 hours(standby time at 150 hours). Voice dial and last number redial is available when using compatible phones.