10Pcs Outdoor Whistle Multi Audio High Triple Frequency Plastic Whistle Camping AccessoriesFeature:1. New abrasives, new materials, arc-shaped corner, ultrasonic welding, large volume2. Good workmanship without burrs. The whistle has three holes, each hole has a different sound, which makes the sound pleasant and affordable3. When traveling outdoors, it can help you confirm your location, avoid getting lost, and find companions. Specification: Length: 71mm / 2.76in Width: 27mm / 1.06in Thickness: 6mm / 0.24in Weight: 8g/pieces Note: There may be slight size deviations due to manual measurement, different measuring methods and tools. The image may not reflect the actual color of the item due to different shooting light, angle and monitor. 10 X Whistle