1/2PCS Outdoor Kayak Scuba Diving Rescue Emergency Safety Whistles Water Sport Outdoor Survival Camping Boating Swimming Whistle _x000D_ _x000D_ new with high quality Material: PP plastic Color: Black Red Orange Green Yellow Size: 72*20*15mm Lanyard opening: suitable for ropes within 4mm/0.16in Weight: 11 grams Quantity: 1pc After testing, the performance is very outstanding. We strongly recommend it! 1. Dual band design. The left and right sides have different sizes of sound chambers, which simultaneously produce high and low frequency sound, ensuring penetration in different environments and conditions. 2. Whistle anti slip design. You don't need to hold it with your hands, and you don't have to worry about the airflow blowing the whistle out. 3. It's effortless to make a sound. When seeking survival or help, pay attention to preserving your physical strength. A good survival whistle can easily make a sound. Some products on the market may sound loud, but they are not easy to produce sound. 4. Integrated design, sturdy and reliable. Package Include: 1pc Outdoor Survival Whistle Camping Hiking Rescue Emergency Whistle Notice: 1.Transition: 1cm=10mm=0.39inch. 2.Please allow 1-2mm error due to manual measurement and make sure you do not mind before ordering. 3.Please understand that colors may exist chromatic aberration as the different placement of pictures. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_