Marshall Major 4 Bluetooth HeadphoneSIGNATURE SOUND Major IV delivers the signature Marshall sound that youve come to expect. Over 55 years of knowledge is packed into Major IV for an explosive sound. Custom tuned dynamic drivers deliver roaring bass, smooth mids and brilliant treble for a rich, unrivalled sound that youll 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