Product detail:
https://www.aliexpress.us/item/1005005265111770.html?spm=5261.ProductManageOnline.0.0.23764edfEgW4Vk&gatewayAdapt=glo2usa&_randl_shipto=PL
Multifunctional Double Tube Survival Whistle Portable Stainless Steel Keychain Outdoor Tools Training Whistle for Camping Hiking
Name: double tube survival whistle
Model: AT6637
Material: stainless steel
Specification: full length 5.7cm, width 1.8cm, thickness 0.8CM
Weight: 25 grams
Decibels: 150 decibels
Scope of application: outdoor, survival, and other scenes
Color: black, silver,golden, chromatic, gray