Brand Marshall Speaker maximum output power 20 Watts Frequency response 65 Hz Connectivity technology Bluetooth Audio output mode Stereo About this item MARSHALL SIGNATURE SOUND: Features Marshall signature sound with Dynamic Loudness that adjusts the tonal balance of the audio to ensure your music sounds brilliant at every volume. TRUE STEREOPHONIC: A unique form of multi-directional sound from Marshall. Experience superior spatial and binaural sound that flows around you and fills any space. 32+ HOURS OF PORTABLE PLAYTIME: Offers 32+ hours of portable playtime on a single charge, so you can keep listening all day and into the next. DUST AND WATERPROOF: With an IP67 dust and waterproof rating you can submerge it in 1 m (3 ft) of water for a period of up to 30 minutes. BUILT-IN MICROPHONE: Now comes with a built-in microphone, making hands-free talking much simpler and clearer. For the first time, you can take calls while getting your day started or preparing for a gig.