Features Durable and lightweight aluminum alloy whistle.Provide up to 120 decibels signal, easy to blow.With keychain and lanyard, easy to carry.Emergency whistle blows wet or dry.When we are in urgent, it could be a life saver. Product Specification Whistle: 2.2 × 0.6 × 0.3 inColor: Sliver/Gold Package included: 2 PCS Survival SOS Whistle Aluminum Camping Hiking Keychain Outdoor Emergency On Aug-11-21 at 18:06:07 PDT, seller added the following information: