Ikevision Emergency Whistle Double Tubes Stainless Steel Outdoor High Decibel Survial Whistle (Grey) SAFETY WHISTLE:Made of Food Grade Stainless steel,safety confirmed and highly durable DOUBLE TUBES:Loud tone can be blasted out because of double tubes.which can provide up to 150 decibels,pitch crisp sound can be heard far distance.save 30% energy than normal whistle EASY TO CARRY:With Keychain,Can be fastened to belt,backpack, bags or in the pocket,not easily lost SURVIVAL WHISTLES:Suitable for outdoor emergency situation in sporting events, […]

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