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SOS Anodized aluminum micro whistle keychain by Wazoo

SOS Micro Whistle™

30 reviews Regular price $5.50
78 in stock

#MyWazoo

Purse your lips around the WAZOO and blow. That's all there is to the finished product!  But it's the story of design and development behind this little screamer that makes it a must-have for every kit and keychain.

There was not an existing whistle on the market that could live up to Wazoo's stringent requirements. They were too bulky, not loud enough, had parts that would fail, or were insanely expensive because they were made from Titanium. In a months-long experiment of compressible fluid dynamics, we tried every tube diameter, chamber length, hole opening angle, and cut depth.  Each variable was tied to the next and as a group, they controlled the pitch, volume, ease of use, and ability to "over-blow" and max out the whistle.  This SOS Micro Whistle™ is the culmination of all that research. It is balanced on the razor's edge of usability, functionality, and compact size. 

  • Dimensions: 8.5mm diameter x 43mm long   (~0.33" x 1.7")
  • All Aluminum construction (no plastic here!)
  • Wide range of function - Starts resonance at low flow (good for kids) and can't be over-blown (good for adults)
Customer Reviews
5.0 Based on 30 Reviews
5 ★
97% 
29
4 ★
3% 
1
3 ★
0% 
0
2 ★
0% 
0
1 ★
0% 
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Customer Photos
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Filter Reviews:
A
03/07/2022
Anonymous
United States

Get one!

Super light and super loud!

TK
03/06/2022
Teresa K.
United States United States

Nab it now.

No excuse not to have a whistle on you with this. Well made and light. Don’t count on your voice if you go down!

A
03/04/2022
Anonymous
United States United States

Per my digital scale, the weight of the whistle sans chain ~3 grams, L.O.A. ~ 1.7" and the O.D. ~ 0.336". The machining is well done; the finish is a matte gray and I find that the whistle requires little effort and no special technique to produce an alarming noise. I'm happy with my purchase.

MF
02/18/2022
Marcus F.
Australia Australia

Micro whistle

Great product light weight, loud ,water proof an easy to carry

A
02/07/2022
Anonymous
United States United States

Just what I needed

Super light and super loud

LN
02/06/2022
Luke N.
United States United States

Great whistle

This is a sweet little whistle. I have it on my neck knife rig and the size makes it unnoticed until I need it. Super loud and clear.

WAZOO SOS Micro Whistle™ Review
A
02/05/2022
Anonymous
United States United States

Best whistle out there!

Super light and super loud!

A
12/16/2021
Anonymous
United States United States

Awesome!

Great lightweight and loud whistle!