Loud Keychain Emergency Whistle
Created 3 months ago
Description
A robust emergency whistle designed to attach to a keychain or lanyard. The 50mm body houses a 12mm spherical resonance chamber and an integrated pea, generating a sharp, warbling tone to signal for help.
Key features:
- Compact 50mm x 18mm profile for everyday carry
- Integrated print-in-place internal pea to produce a warbling sound
- 12mm spherical resonance chamber
- Rear mounting loop for quick attachment
The flat base allows for clean printing without external supports. Once printed, the internal pea may require a gentle tap or shake to fully break free and move within the chamber.
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