EMERGENCY WHISTLE for the safety of hiking and camping trips on a keychain for easy access. CAN BE CARRIED ON A LANYARD OR KEYCHAIN FOR COYOTE DETERRENT from predators on the trail. GREAT FOR A WHISTLE EMERGENCY. Great survival whistle for Rescue in emergency situations. EASY USE HIKING WHISTLE - Takes less effort to make a loud whistle sound. Perfect self defense for a safety whistle for women walk on a trail to alert of a stalker! Material: stainless steel Specification: full length 5.7cm, width 1.8cm, thickness 0.8CM Weight: 25 grams Decibels: 150 decibels Scope of application: outdoor, survival, and other scenes Color: black Easy to blow Up to 150 decibels Double hole double tube design High quality stainless steel Key ring buckle function Product includes: 1x whistle