Roland FR-4x Accordion

KEYBOARD, BASS & BELLOWS

Right hand: 37 keys (with velocity sensitivity)

Left hand: 120 bass buttons (with velocity sensitivity)

Bass & Chord Mode:  (Left-Hand Keyboard Note Layout)2 Bass Rows, 3 Bass Rows A-7th, 3 Bass Rows A-5dim, 3 Bass Rows B-7th, 3 Bass Rows B-5dim, 3 Bass Rows Bx-7th, 3 Bass Rows BelgiumFree

Bass Mode:  (Left-Hand Keyboard Note Layout)Minor 3rd, Bajan, Fifth, North Europe, FinnishBellowsHigh-resolution pressure sensor for the detection of bellows pressure

Bellows resistance regulator: wheel with fine adjustmentBellows curveFixed Low, Fixed Med, Fixed High, X-Light, Light, Standard, Heavy, X-Heavy, Close, Open, Tango, Traditional, Jazz, Classic, Dynamic1, Dynamic2