Specification:NameEmergency Survival WhistleMaterialStainless SteelColorGold, Black, Blue, Red, Silver, Green, PurpleLength63mmWhistle Diameter11mmWeight13gFeatures:High strength stainless steel, anti-rust and durable.Smooth whistle holes, up to 150db volumn, louder soud.Easy to blow whistle, adapt to bad weather or conditions.Package Included:1 x Outdoor Survival Whistle