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