Alpkit Williams Whistle

Survival whistle for whistling really, really loud in emergency situations: bright orange, shrill, you know the sort. Produces over 100 decibels. Has an eyelet for fixing to a lanyard and a built in clip for attaching to your rucksack.

EN ISO 12402-08 compliant for attaching to ...Survival whistle for whistling really, really loud in emergency situations: bright orange, shrill, you know the sort. Produces over 100 decibels. Has an eyelet for fixing to a lanyard and a built in clip for attaching to your rucksack.

EN ISO 12402-08 compliant for attaching to life jackets. The Williams Whistle was developed by a highly specialised team of whistle scientists, sworn to secrecy and operating deep in the bowels of the Alpkit Labs. The AlpWhistle Research Group's project explored new frontiers of whistle physics, pushing back the boundaries of human understanding, in its quest for the ultimate high oscillation, high decibel audio safety device.

Only kidding. It is a good whistle though. And it's always sensible to carry a whistle.