Bluetooth wireless headphones for high-quality sound at home and on the goSyncs with all your Bluetooth devices for up to 20 hours of wireless playback when fully charged; over two hours of playback with a 15-minute quick chargeBuilt-in mic and buttons make it easy to turn power on/off, adjust volume, change tracks, pause for calls and Resume play with just a touchLarge 30mm neodymium drivers and acoustic bass control filter deliver sharp bass tones plus clear treble and vocalsUltra-light design weighs only 4.5 ounces; soft padded ear cups swivel and fold flat to fit neatly in different size bags, Briefcases and purses