Bluetooth pairing is done by simply passing the smartphone over the SC-NA10. No more worries about troublesome settings or poor connections.A built-in, long-life battery enables 20 hours of operation. That means you can keep listening to music without having to worry about the playing time. The apt X low latency high-performance audio codec decodes low-compressed, high-quality audio data. It gives you treble sounds that couldn't previously be reproduced, & prevents lapses between the sound. The compact body houses two front speakers for crisp, clear vocals. The passive radiator also expands the low-frequency range to add further depth to the sound. Thin passive radiators cancel out vibrations inside the speaker thus suppressing unwanted vibrations & delivering robust bass sound & creates crisp bass sound.