... radio and VFD 1.Hot 4.1bluetooth speaker , solemn and delicate overlook.2.With USB/SD card read,and FM function, remote ... control.3. 5.25" composite cone speaker adopted in bass part, enable low-mid section fidelity clean and ... made by hand, high intensity, effectively eliminate resonance and cabinet noise5. With Standby,Input,Menu,VOL+,VOL ... speaker with USB/SD/FM radio and VFD