With 29 decibels of isolation from outside sound, the quiet headphones block outside noise and there is no need to crank the volume of your music. J VC announced a new in-ear Bluetooth stereo headset for hands-free calling and music listening. The HA-W700BT offers superb stereo sound combined with excellent isolation, and up to 11 hours of use from the built-in lithium-ion rechargeable battery. During the music playback it is also used to stop the playback. The multi-function roller on the bottom can be pressed to start the music playback as well is used to adjust the volume and to jump to the next/previous track.