Description 100% Brand New, High Quality Material: aluminum alloy Specifications: length 47mm, diameter 9mm Weight: 10g/pc Color: red silver yellow blue Features: Hanging on backpacks, keychains, fashionable and practical! Peers are in contact with each other in the wild. When it is dangerous or unexpectedly in need of help, a little whistle is enough. Helps a lot. Notes: 1. As we all know, different computers display different colors, and the actual color may be slightly different from the picture below. 2. If you find it difficult to choose the size, you can contact me at any time, we will give you some suggestions, but only for your reference. 4. We can accept orders of mixed items, colors and sizes. The higher the quantity, the higher the Package Included: 1 pcs whistle Brand: 【Versatile Functionality】This product is multifunctional and can be used for a variety of tasks, providing you with the flexibility and convenience needed to handle multiple uses with a single tool. 【High-Quality Materials】Crafted from premium, materials to ensure longevity and superior performance. Each product is meticulously tested to meet high standards of quality and safety. 【Eco-Friendly and Sustainable】Made with environmentally conscious practices, this product is eco-friendly and contributes to sustainability efforts. It is designed to minimize waste and reduce environmental impact. 【Exceptional Performance】Engineered for high efficiency and effectiveness, this product delivers outstanding results every time. Its advanced features ensure consistent performance, making it a reliable choice for your needs 【User-Friendly Design】Ergonomically designed for ease of use, this product offers intuitive controls and a comfortable grip, making it perfect for both beginners and experienced users.