High frequency survival whistle

Key accessories: Key chain Style: Both men and women Pendant material: others Material: Zinc alloy Suitable for occasions of gift giving: tourist commemorative Color: Gold, silver Applicable to gift-giving relationship: children, classmates Applicable holiday: National Day Whether belongs to the gift: Yes, the personal gift Product name: High frequency twin - tube survival whistle Material: aluminum alloy material, plastic core Colors: silver and gold Peak volume: about 120dB Surface treatment: oxidation + sand blasting Specification: length 55mm× width 15mm× thickness 8mm 【 characteristics 】 1, light and equipped with a key chain, easy to carry; 2. Larger caliber, louder whistle, outdoor distress selection supplies; 3, aluminum alloy material, surface anodic oxidation technology color, do not fade, longer service life