3-Chamber Wide-Frequency Plastic Survival Whistle with Metal Bead Chain
Designed with three independent air chambers, it produces wide-frequency high-decibel penetrating sound. The multi-tonal loud signal easily cuts through wind, foliage and ambient noise, serving as reliable rescue alert gear for camping, hiking, sports training and wilderness emergency SOS signaling.
One-piece integrated waterproof plastic structure maintains stable sound performance under damp, rainy outdoor conditions, with no loose internal components to cause jamming or sound failure. The ultra-thin lightweight profile fits easily into pockets, wallets and survival kits without extra burden.
All blowing slot edges are smoothly rounded to prevent lip abrasion during long-time continuous blowing. The uniform matte surface resists scratches and wear for long-term daily standby and frequent outdoor use.
Compact lightweight portable EDC safety accessory for sports lovers, hikers, campers and household emergency reserve kits.
What's in the box
1 x Whistles
