The HT820 simultaneously connects your Bluetooth-enabled phone with a separate music source, allowing you to listen to tunes without missing a call. Music automatically pauses when a call comes in and then, when the call is complete, the music resumes play where you left off.
Background noise is minimised via a noise cancellation microphone and the battery provides up to 14 hours of stereo listening or up to 17 hours of phone talk time. There also are multi-purpose buttons for remote control of the music source and mobile phone.Â A 3.5 mm headset jack cable allows for use on aircraft or non-Bluetooth devices.
Meanwhile the Gateway DC800 can be connected to your home audio system and can transmit to the headphones up to 100 metres away.