2PCS Outdoor Loudest Emergency Survival Whistles with Carabiner and Lanyard for Camping Hiking Sports Dog Training

Louder Sound,double tubes can provide up to 150 decibels,can be heard for far distance.^
Strong and Durable,stainless steel material ensures the whistle durable^
Good Environmental adaptability - The whistle has no built-in pea ,so it will not mold and breed bacteria because of the pea.You can use it in any dust or dirty water environment^
Convenient and practical,with carabiner keychain,can tie on your backpack,belt^
Package includes,2 X Whistles with keyring,2 X Carabiner,2 X Lanyard