The whistle works well. I keep it attached very nicely to my cellphone case. Attached it to my compass. Convenient for holding or attaching to a neck lanyard, keychain etc.

A young professional man in our neighborhood was held up at gun point early in the morning on his way walking to the train. He was carrying a laptop backpack, which he was easy pickings for a mugger. The first thing the firemen yell when arriving at a...  Read More

After reading the hyped up packaging and paying $9. Not even a ruu roh. My cheapo whistle blows this one away.

Small opening makes it hard to seal with your lips. If i plug one of the holes and blow into it just right in a sweet spot it gets pretty loud. I was lured by the jet scream.

Whistles are not super loud as advertised. Also it is more whiney than attention grabbing loud.