It is a pump action spray with 2 independent nozzles.
It can be attached to standard 1.5L soda or mineral water bottles.
It works on a piston action pump, drawing the pump will draw water through the straw into the mechanism and pushing the pump will dispense the spray through 2 nozzles which can be vertically adjusted independently.
One can point up while the other can point down.
Each nozzle can also be adjusted for flow, from stream to mist.