Is it meant for dogs? Or can it be?

It is a very loud whistle used for officiating soccer. It is definitely going to get everyone’s attention. My understanding of a dog whistle is that they can hear but we can’t. But when you blow this it will get people’s attention.

How much do these weigh?

Hi Steve, I looked up the 2 finger whistle on line, and it weighs 11 grams; I would imagine that this weighs less--and if you want even less remove the ring. My grandson prefers the 2 finger whistle: http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dsporting&field-keywords=referee%202%20finger%20whistle

Is this really 6.5 inches long???! (see description)

No itis no where near 6.5 inches...more like 2 inches

How durable is the Acme 635 whistle? It looks like it would break somebody sat or stepped on it.

Well if stepped on it of course you will break it it’s plastic good sound light whistle I love it I got it for four years I’m very careful wit it.

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Genuine ACME Professional Quality BPA Free Plastic No.635 Tornado Airfast Whistle, Medium Size, High Pitch, Pealess, 117dBA, Designed and Manufactured in the UK

Product ID: 725598162

Details

Brand
ACME
Color
Black
Item Weight
9 g
Material
Plastic
Style
contemporary

🌊BPA-free, marine-safe plastic

🔊117dBA piercing sound

⚙️No moving parts, ultra durable

Description

⚡ Blow the competition away with the iconic ACME Tornado Airfast!

BUILT TO LAST - No moving parts means zero mechanical failure—reliable in every critical moment.
COMPACT POWERHOUSE - Lightweight (8g) and pocket-sized for effortless carry and instant access.
SAFE SUSTAINABLE - Crafted from BPA-free, food-grade plastic for eco-conscious professionals.
CUT THROUGH THE NOISE - 117dBA high-pitch sound ensures you’re heard over any crowd or weather.
HERITAGE OF EXCELLENCE - Designed and rigorously tested in the UK with 150+ years of ACME expertise.

The ACME 635 Tornado Airfast whistle delivers a piercing 117dBA sound without any moving parts, ensuring unmatched reliability. Made from BPA-free, food-grade plastic, it’s lightweight and designed for professionals in sports, marine safety, and officiating. Proudly designed and manufactured in the UK, this whistle combines 150 years of craftsmanship with modern durability and performance.

Specifications

ASIN	B005UGMKFM
Batteries Included	No
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (281)
Date First Available	January 1, 2011
Material	Plastic
Model Number	635
Product Dimensions	16.51 x 7.62 x 2.54 cm; 9.07 g
Sport Type	Whistle
Target Audience	adult uni

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