Rugged design lets you take this portable speaker on cross-country rides, to the beach, or toss it in the back seat without worry True Stereophonic (360-degree sound) provides superior spatial and binaural audio that surrounds you from every direction Delivers Marshall signature sound with well-balanced audio and punchy bass Bluetooth technology allows for reliable wireless connectivity with various compatible devices Over 32 hours of reliable playtime on a single charge for non-stop music wherever you go Dust and waterproof construction makes this speaker ideal for use in different environments IP67 rating enables it to be submerged in water for up to 30 minutes Built-in microphone allows for hands-free calling experience Bluetooth LE Audio-ready technology ensures future-proof performance by enhancing audio quality