Major III Bluetooth is the next chapter in the revolutionary history of Marshall. Major III Bluetooth offers you the freedom and convenience of wireless Bluetooth aptX technology and 30+ hours of playtime on a single charge. Bluetooth aptX gives you exceptional audio quality and the freedom and convenience to move within 30 feet of wireless listening range. The Major III Bluetooth keeps the music going strong with over 30 hours of wireless playtime on a single charge, leaving competitors in the dust. Major III Bluetooth features 40 mm dynamic drivers that are custom tuned for enhanced bass, smooth mids and clear highs. Major III Bluetooth is a modern classic re-engineered with a straight fit headband, slimmed down 3D hinges and rebuilt ear cushions. While thicker loop wires with reinforced rubber dampers that contribute to the overall solid build quality. With the multi-directional control knob you can play, pause, shuffle and adjust the volume of your device, as well as power your headphones on or off. Phone functionality is also included so you can answer, reject or end a call with a few simple clicks. Battery Time: Play Time. 30 + hours (at medium volume) Charging Time. 3 hours to full recharge.