Osaki OS-Champ Massage Chair Main PCB, Electronic board, Mother Board 3210GX-TIT You can see the Osaki logo on the headrest, a nice touch that adds to its overall appeal. Cozzia CZ-710/Qi Massage Chair Footrest Legrest Wire 4 pins Main PCB, Electronic board, Main Board Osaki OS Pro Cyber 3D Massage Chair 381E