: aluminum alloy, ultimate lifeguard, stainless steel, double tube Loud whistle: 120 decibels in case of an emergency and the referee uses the whistle to hear long-distance crisp sounds over long distances Waterproof camping: suitable for all weather, rain, wet weather and excellent air flow design Lightweight design: 12g, key chain or backpack, perfect size, stylish and practical, easy to carry. Versatility: Safety whistle for any type of camping, hiking, hunting, fishing and boating and other outdoor activities Size: 56 x 15 x 8mm Color: Gold / Silver Specifications: : aluminum alloy, ultimate lifeguard, stainless steel, double tube Loud whistle: 120 decibels in case of an emergency and the referee uses the whistle to hear long-distance crisp sounds over long distances Package Included: 1x Whistle Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.