Name: Titanium alloy high decibel double tube whistle Color: Grey/Silver/purple blue Specification: 40*18*9mm Material: Titanium alloy Weight: 8.5g Suitable for hiking camping, outdoor travel, team training, distress, danger warning The process is meticulous, the edges and corners of the products are designed with small chamfer, the texture is exquisite, the corners are rounded and the grip is good. Wide coverage, high frequency penetration, up to 120 dB.
