The keyboard is a full 3-1/2 octaves. It has two sets of reeds,
bass and male. There are 6 knobs, three for controlling the air flow through the playing reeds, and three for extra drone notes.
The bellows is multi-fold. The harmonium is easily portable when folded, being 7.5 x 12 x 23 inches when collapsed. It weighs 20.5 lbs. and comes with a well designed black nylon carrying bag.