Zealot S51 Pro Shocking Bass Bluetooth Speaker with Colorful Light(Black)Feature: 1. High volume without breaking sound! No matter where you place the speaker, 360 degree surround sound technology ensures that its sound spreads evenly. 2. 57mm loudspeaker release the surging sound waves. Dual diaphragm for high and low frequency horn and bass, accurately capture every fluctuation, surging and dynamic, making the sound more natural and transparent. 3. The amazing colorful lights and music creates a full atmosphere and