From the manufacturer
SIGNATURE SOUND
Major IV delivers the signature Marshall sound that you’ve come to expect.
Custom-tuned dynamic drivers deliver roaring bass, smooth mids and brilliant treble for a rich, unrivalled sound that you’ll never want to turn off.
80+ HOURS OF WIRELESS PLAYTIME
Major IV delivers 80+ solid hours of wireless playtime with quick-charge capability
– only 15 minutes of charging will give you 15 hours of listening. These are headphones truly built for the long haul.