Rocking with a rustic edge: the S770PB features a Poplar Burl top, with Mahogany body. The ZR bridge is the same as the ZR-2's, but with a newly improved tremolo arm with ball bearings for more smooth and stable arming. And the new arm socket enables easier torque control. Also includes the standard Zero Point System for enabling perfect return to pitch. S770PB's brigade of INF pickups: INF1 (H) neck, INFS1 (S) mid, and INF2 (H) bridge.