Anonymous Shipping, Disaster Prevention & Crime Prevention Whistle, Psycho, Glow-in-the-Dark, 4 pieces, Sanwa Seisakusho

Glows in the dark with phosphorescent color.
Emits a sound at 3150Hz, said to be the most audible frequency for humans. When panicking, it can be difficult to exhale, but this whistle is excellent as it can produce sound with just a small breath. Recommended for the elderly and small children.
The scientific whistle sounds powerfully, announcing your presence and protecting your precious life.
The size is approximately 5 cm in length and 2 cm in width, including the strap hole. It is very small and lightweight.
If you wish to purchase a specific quantity, please leave a comment. (*′?`*)

Let's be prepared with something to protect our lives!

Thank you.