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 Package size: 6x2x1CM Scope of application: outdoor, survival, and other scenes Color: black, silver Features: outdoor make a living whistle, blow easily, as high as 150 db. Double hole and double tube design, high quality stainless steel material
