Louder Sound,double tubes can provide up to 150 decibels,can be heard for far distance.
Feature:
Strong and Durable,stainless steel material ensures the whistle durable
Feature:
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
Feature:
Convenient and practical,with kering and carabiner keychain,can tie on your backpack,belt,
Feature:
Package includes,2 X Whistles with keyring,2 X Color-sorted Carabiner,2 X Lanyard
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