Marshall Major IV come with 80 hour battery and wireless charging - news
That's over three days of continuous use. Marshall has announced the new Major IV Bluetooth headphones, which come with a serious boost to battery life
Marshall's Major IV headphones provide 80 hours of music playback
Marshall Major IV Wireless Headphone with Remarkable Battery Life
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Marshall's latest headphones last over 80 hours on a charge
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Marshall Major IV review - SoundGuys
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Marshall's new Major IV headphones boast 80+ hours of wireless playtime