Looking for a loud whistle?

[Guyon]

Check out the Acme Tornado Slimline too. They're made in England, but you can find 'em on eBay. That's what's on my keys.

 

[wetduck]

double

 

[wetduck]

Thumbs up for Fox 40 Micro

 

[Infi-del]

not much of a whistle expert but I got one of these free with my going gear order: http://goinggear.com/index.php?main_page=product_info&cPath=7&products_id=451 The thing is extremely loud. I gave it to my mom for her keychain.