DEEPBLUE - SOS Whistle, Diver Safety whistle Stainless Steel Keyring นกหวีดเซฟตี้ สำหรับนักดำน้ำ ว่ายน้ำ

This S.O.S Whistle is made from high impact polypropylene. The Safety Whistle has extremely high decibel level of 113 dB with minimal effort. Safety Whistle is popular because customers like that it's Easy To Use, Functional and Lightweight. Ocean Design Marine Safety Whistle Features Unique Survival Whistle Clips to Pocket or Belt Lanyard Attachment Hole Extremely High Decibel Level: 113dB Maximum Sound with Minimal Effort Pea-Less Design No Moving Parts to Jam of Freeze-Up High Impact Polypropylene Construction