Features: Made from high-density panels, meticulously constructed to deliver a clean, robust, and weighty sound for the speaker. 4-inch woofer for bass enhancement and low-frequency playback. Features an air vent for a more impactful sound. Rotary design with two knobs for volume and bass adjustment. Plastic steel mesh cover provides effective dust protection and safeguards the speaker. Specifications: Material: Wood Speaker Size: 80*145*65mm Control Body Size: 230*140*190mm Separation: Over 40dB Noise: Over 80dB Frequency: 25Hz-20KHz Power: USB 5V Output Power: 5W Cable Length: 1.1M Color: Black Package includes: A set of speakers Notes: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. Thank you.