Feature: -- 8 inch woofer speaker -- 73mm Slim fuselage, installed under the seat, the effect is better -- Built-in bluetooth 5.0 for easy wireless connection to play music -- Has a professional singl more→e channel power amplifier template, including bass filter, bass enhancement, high-frequency power controller, remote control by wire and other high-end functions. -- Wooden MDF body, to minimize vibration caused by noise, to ensure that in a long time, high load performance in the environment stable and reliable. -- Design of high temperature resistant coil, ensure the heat dissipation and avoid the sound box burning. Specifications: Model: K-808APR (built-in bluetooth) bluetooth version: