Còi 4 Khoang Âm Thanh Cực Lớn (Đã Test)

SUPER HIGH-Tone Quad-Chamber Decibel Whistle

This is a compact, high-performance whistle engineered with four distinct acoustic chambers. It is designed to maximize volume and create an attention-grabbing.

Features

• Extreme Volume: Reaches over 110 dB, making it highly effective for emergency signaling and outdoor survival.

• Pealess Design: No moving parts to freeze, jam, or degrade over time.

• Integrated Lanyard Loop: Features a robust hexagonal loop on the rear for secure attachment to keys, packs, or paracord.

• Print-in-Place: Fully optimized for 3D printing without the need for internal supports.

print in place
no supports
15 % infill