Gravastar Mars Pro Wireless Bluetooth 5.0 Speaker, War Damage YellowA two way speaker system design with a passive bass radiator to create big sound in a small enclosure. Using DSP 4 ways, digital crossover independently compensates and tunes the Low Bass, Mid Bass, Mid and high frequency to ensure clear sound separation, balanced tonality, and accurate sound reproduction that the musician intended you to listen and enjoy. Zinc alloy shell allows sound waves to resonate within its space Audiophile Level algorithmic