Mars Pro is Bluetooth 5.0 speaker(Black) with a dual speaker system and a passive bass radiator to create a powerful all-around sound. The wireless speaker has a 15-hour battery life, 6 RGB lights, and can be paired with another Mars Pro speaker to create a powerful stereo experience. Mars Pro is the born warrior of GravaStar plant! The GravaStar Mars Pro is created for audiophiles. The Bluetooth speaker has built-in, exclusive DSP audio algorithms that gives you a deep bass, accurate mids, and crisp highs. Combined with an equal-loudness contour, you get a powerful sound experience. Features 2.5" full-range speaker producing a maximum 20W output A 15-hour battery life for uninterrupted listening Linking technology with mecha sci-fi, the industrial design transports you to a futuristic world The highly sensitive touch volume control makes it easy to turn your room into a stadium concert Built-in DSP audio algorithms to deliver an incredible bass, accurate mids and crisp highs 6 dynamic RGB lights with different modes to suit any mood