Acme AC-60.5PB Brass Thunderer 60.5, Brass

If you look at my photos, you’ll see that it looks like my whistle sat around in storage for some time. The inside shows some corrosion as if it was exposed to humidity for awhile. Also, there is minor surface scuffs from the whistle sliding around in the package. Probably nothing can be done about that, but it does make it less than pristine. As functionality goes, this whistle is SUPER loud. You won’t have any problem being heard. Whether you carry this to recall animals or kids who stray too far, or to signal rescue workers to your location, I’m confident this whistle can be heard far and wide. As far as refereeing, it’s a no-brained that this whistle will cut through the noise of a cheering crowd to be heard by players. I also have The Whistler Jr. brass emergency whistle which is painfully loud, and this whistle is noticeably louder. It’s not very large so it’s easy to wear. I’m happy with it, but for a brand new, POLISHED brass whistle, I expected a more aesthetically pleasing product. It has a real cork ball inside. Cork strongly resists mold so I wouldn’t be concerned about that at all. Since it’s brass, it won’t rust, but you might want to buff it with some Brasso from time to time.I’d buy it again.

Simply the best. Solid brass, thick guage, polished, high pitch and high volume output. Gorgeous.HIGHLY RECOMMENDED

This whistle is exceptional. Well crafted, solid brass with no seam on the barrel whatsoever and a slight seam at the mouthpiece under belly. Exorbitantly loud compared to all other whistles I’ve blown. Planning to use in falconry.

This whistle is small which is great because I wear it around my neck on a lanyard. It has a great sound and is very loud if you want it to be. Very happy with my purchase.

Of the four whistles I have, this is my choice for outdoor emergency situations.I compared this to three whistles. Two of them were straight whistles, one titanium alloy and one bamboo shaped. The other was a Fox 40 Sonik Blast.The two straight whistles were well-made but put out little volume. The Fox 40 Sonik Blast may be as loud as the Acme, but the Fox 40 Sonik Blast doesn't have the recognizable pea whistle sound, as it isn't a pea whistle. In addition, the Sonik Blast is made of plastic and has two chambers, whereas the Acme is made of brass and has only one chamber. The choice between the latter two would be of personal preference.