Plastimo Mini Floating Mouth Air Horn 100dB

Combines the powerful blast of the sound of a gas fog horn, with the simplicity
of a mouth horn: delivers over 100 dB with no effort.
Operates on the vibration of a plastic diaphragm, which can easily be replaced
with any thin plastic film.
Hard wearing, colourfast, nature friendly, and economical.
Virtually can't be lost, because it floats.
Compact version.
Diameter: 50mm
Length adjustable from 87 to 163 mm mm