Survival double Tubes Emergency Aluminum Whistle with Key Chain

it is super light weight,very easy to carry around ,in case of emergency you can blow it ,its high frequency can be heard from distance,trustable quality!

1Durable and strong,made of high quality aluminum alloy.
2Double tubes and crisp sound, you can use it in any life-saving environment.
3Maximum sound intensity of up to 118 decibels, can be heard for far distance
4High frequency Diplopore whistle is a good outdoor helper, compact and easy to carry, cavity free bead design, water inside also can be used. For Multisport , Camping , Mountaineering , Travel , Running , Climbing , Rock Climbing , Backpacking
5Ultra-light and portable ( only 11g), can attach to any bags.
6Size: 2.2*0.6 inch