Marshall signature sound: Emberton III features more bass than its predecessor. Dynamic Loudness adjusts the tonal balance as you change the volume. Discover a rich, full sound that'll never let you down. True Stereophonic: Available exclusively on Marshall products, True Stereophonic is a unique form of multi-directional sound. This is absolute 360° sound, where the music finds you. It's true, not all speakers are created equal. 32+ hours of portable playtime: That's more than a full day of listening on a single charge. Enough time to play through an entire discography. When you do run out of battery, just plug in your speaker and return to full charge in 2 hours. Dust and waterproof: Featuring an IP67 dust and waterproof rating, you can submerge Emberton III in 1 m (3 ft) of water for up to 30 minutes. Marshall's on the road spirit lives on in this rugged speaker design. Built-in microphone: Music comes first, but we know life gets busy. Emberton III comes with a built-in microphone, making hands-free talking much simpler and clearer. You can take calls while getting your day started or preparing for a gig.