The Harmony Boaters Mouth Horn features the ease of a whistle with a bit more kick. The Boaters Mouth Horn provides a loud, distinctive, attraction-grabbing tone that duplicates that of larger boats. This light, compact and easily-stowed horn offers one-hand operation and is unaffected by water. Lanyard included. No battery required.
This horn was a reat dissapointment. I had originally intended to get a Shoreline Marine safety blaster horn. This one looked smaller and I thought (mistakenly) that it would perform close to the sound capabililty of the Shoreline. It does not. The sound it makes is feeble by comparison.