9MM Thick-Wooden Boxstable and thick, can effectively reduce noise and obtain a more pure and good sound.Deep bass, clear treble without distortion. Newly Subwoofer DesignEnhances the bass performance of the subwoofer by directly spreading the bass vibration to the ground. 16W System of PowerfulYou don't have to choose between "not enough power" and paying for more power than you need. with16W, you have just the right amount of power to fill the room. USB-Powered 2.1Speakers Liberate your AC outlet, which will be a good choice for your outdoor party and camping. Perfect Size for PCSubwoofer is small enough to easily fit in a tight space, tucked away under a desk or bed. and Small Speakers Will not take up the entire office space.