FR6 is a special Wireless resonance pickup for guitar. It has its own Wireless module. Even if it is not connected to the speaker, it can also connect the pickup through Wireless to play accompaniment and drum machine, and has its own delay and reverberation effects. During installation, there is no need to damage the piano body, just loosen the screws at both ends of the pickup, clamp the pickup on the piano body and tighten the screws, which is very convenient.