Spray bottle having hinging and locking spray head assembly with replaceable components, and multi-label systems

A spray bottle assembly comprising:

• a bottle for containing a liquid, the bottle having a neck;
• and
• a spray head assembly having a base cap configured to removably attach to the neck of the bottle, and a spray head pivotally attached to the base cap, the base cap comprising at least one feature that rotationally locks the base cap relative to the neck of the bottle to constrain the spray head to pivoting in a predetermined vertical plane,
• wherein:
• the base cap comprises an insert for placement in the neck of the bottle, and wherein the at least one feature that rotationally locks the base cap comprises at least one notch in the insert;
• and
• the neck of the bottle comprises an interior protrusion received in the notch;
• and
• the spray bottle assembly further comprises a collar that secures the base cap to the neck of the bottle by rotating the collar relative to the neck of the bottle, and wherein the interior protrusion received in the notch prevents the base cap from rotating relative to the neck of the bottle when the collar is rotated and thereby tightened;
• and
• a label comprising a ring, for positioning on the neck of the bottle, a presentation flap perpendicular to the label ring by means of a preformed bend or fold line disposed between the ring and presentation flap, wherein the bottle includes a protrusion disposed away from an exterior surface of the bottle, an edge of the presentation flap disposed between the bottle surface and the protrusion.