Instant purchase welcome Same-day shipping Brand new, unused Loud whistle with a maximum volume of 120 decibels You can control the volume by how hard you blow The 120dB volume is loud enough to be heard in a gymnasium or a large stadium Very effective for alerting people far away Useful for hikers and outdoor activities to alert others or signal distress Can also be used as a signal to call for help in an emergency. Useful for attracting the attention of rescuers in the event of a mountain accident or disaster Made of aluminum alloy, it is durable and suitable for use in tough environments Recommended as a crime prevention measure, and as a gift for young children and the elderly Sometimes the sound may be difficult to produce, so blowing it short and hard will produce a loud sound You can attach it to various bags, so we also offer multiple sets 【Product Information】 Size: Approximately 5.5cm x 2.5cm x 1cm Material: Aluminum alloy 【Contents】 Gold x 2 Silver x 2 We also have a set of 2 (1 silver, 1 gold) available (*^^*) For families, individuals, and friends, it's useful in dangerous situations or when you can't speak. Also great for commuting to school or work! We inspect the items, but if there is a defective product, please contact us before leaving a review. We will respond with sincerity. The color may differ depending on the device you are using. Please understand. Returns are not accepted for reasons such as the image or size not matching.