From the manufacturer
Major III Wired Headphone Features
Upto 30+ hours of playtime
Major III keeps the music going strong with upto 30 hours of playtime on a single charge.
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.