Acme Thunderer Whistle 60.5, Small, High, Loud

A great tool. I immediately realized that it is at a much higher level than conventional whistles. It is very loud and robust. I'm sure it will last me for many years.

Much louder than those backpack buckle whistles.Both the backpack whistle and this one were audible at 1/4 mile. This whistle was imo 70dB while the backpack whistle was around 55dB at that range. Just my opinion from experience with dB. Still want to test this at ranges of up to 1 mile & possible 1.5 miles.Pros:-First time you blow this thing hard (tongue blocking air hole - then quickly remove) - you will likely hurt your ears. I learned the hard way. Just a warning.... it can be loud with assertive blows.-blowing takes minimal lung capacity (I have Asthma)Cons:-I have extremely sensitive ears (yes I hear most electronics & nearly all tvs and chargers)----> Meaning I had to cut the metal keyfob ring out and replace it with rope to avoid excess noise----> hole was too small for 5040H paracord - likely could be drilled out----> used neon yellow mason line instead-Was whistling in a PA state forest this past weekend around people & it did not seem to immediately grab their attention or piss them off. I want a whistle where people instinctively are like: "OMG WHAT IS GOING ON?! SOMEONE COULD BE LOST - LET'S FIND THEM!!" Having said that I was approx. 100ft from said individuals & my hiking partners were laughing. It could've been the vibe.I encourage you to test every part of your survival equipment. I will likely fail to post back after further testing unless the whistle spontaneously combusts. Apologies in advance.

I loved the whistles. Worked great as expected. Used for Drum Major tryouts and performances. The Ultimate of Drum Major whistles.

I have worked in aquatics off and on for over 40 years and currently teach the ARC Lifeguard Course. I have been using this brand since the beginning. FOX 40 is a fine whistle but there is no substitute for the Thunderer.

This was a big hit with the beach lifeguards in my household.

Works great. It's loud and distinctive. My only complaint is that the chrome started flaking off relatively quickly. This doesn't affect the function, but mine doesn't look nice and shiny anymore.

Amazing little whistle, you won't believe the blast you get out of it. Compact and incredibly durable - I've had have mine for 45 years (seriously!), got this one for my wife. We use them on bike rides for signaling. From a British company that has been around for 150 years supplying these, police whistles, and even the clickers that they used during D-Day (look it up). The real deal and a bargain. Just buy it, you won't be sorry but you will be heard!

I have fond memories of using an Acme Thunderer as a lifeguard in the late 60's. It was effective then and is just as effective now except that I use it in my backcountry emergency pack, not the local swimming pool.