Freeshipping 50pcs/lot Outdoor survival whistle Lifesaving Dual whistle Spot goods emergency whistle

Name:

survival whistle

Feature:

dual

Product Description New  Life  New  Shopping please feel free to contact us if any question Outdoor survival whistle Lifesaving Dual whistle Spot goods emergency whistle rescue 1.Dual-frequency design. The left and right sides of the vocal cavity with different sizes, at the same time to produce a high low-frequency sound, ensuring different environment, conditions are excellent penetration
2.A design of anti. Can not walking, with the mouth contained also need not worry about the airflow will whistle is blown out
3.Speak easily. For survival, attention must be paid to conserve energy, good survival post must be ableto easily out of sound
4.Integrated design, sturdy and reliable