Product description
Material: Aluminium Alloy
The whistle is made of high-quality aluminium alloy material, which is strong and durable, fireproof, and rustproof, and not easy to be damaged even in harsh environments.
They are all small and light, and they come with a keychain, which is very easy to carry. You can hang it on your belt, on a backpack. Or you can pair it with a lanyard and hang it around your neck to carry it out.
Each whistle keychain is a double-pipe design, and the volume after blowing can be as high as 80-120 decibels.
The inner cavity has no bead design, and the water can also be used, suitable for all weather, rain, wet weather, and excellent air flow design
Size: length 5.5cm x width 1cm x thickness 0.8cm