Emergency Whistle 30Pcs Dolphin Sound Outdoor Survival Whistle 4 Colors Rescue Emergency Whistle Diving Football Tool Outdoor Tool

Material: PP plasticColor: Black Red Orange Green YellowSize: 72*20*15mmLanyard opening: suitable for ropes within 4mm/0.16inQuantity: 30pcAfter testing, the performance is very outstanding. We strongly recommend it!Package Include:30pc 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.

• 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
• 5.Please note that slight color difference should be acceptable due to the light and screen