eatures:Durable and lightweight. Very portable and easy to use.Simple silver color design, very fashion and beautiful.If you use it with a ring, it can easilly hang in your bag.Ideal for outdoor activities, hiking, camping, pet chaining and emergencies.Very high volume blow sound Descriptions:Tip: Use three sharp bursts to indicate a call for help. Use two bursts to answer a call.A great attention getter!Fit for - school sports training,basketball,soccer,football and other sports, for referees, coaches, or anyone who needs a safety whistle. Specifications:Material: MetalSize: 4.5 x 1.8 x 2.1 cmColor: silverPackage included:1 x Whistle Notes:Please allow 0-2mm error due to manual measurement, thanks for understanding.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you!