Alpine Flat-Folding IR Control Single Source Wireless Headphones | SHS-N106 Single source wireless headphones with on-ear design Built-in volume dial, power switch, and LED indicator Fold-flat design makes for simple carry and storage Features auto shut-off to preserve battery life Infrared control integrates with Alpine models PKG-RSE3DVD, PKG-RSE2 or PKG-1000 from the backseat of a car