Use the Swamp Donkey Adventures Whistle to signal for help or get attention when you're adventure racing or out on your own excursions. An emergency whistle is necessary for safety, but you can also carry for peace-of-mind when you go for a hike or run in the woods. 
 
Features:
Flawless, consistent and reliable
Easy to blow and cannot be overblown
Will be heard above ambient noise, loud crowds, the roar of engines, breaking waves and thundering gale-force winds
Sound will be heard up to a mile away
Works when wet.
No moving parts to freeze, jam, or deteriorate
Chambers are designed to self-clear when submerged in water
The harder you blow, the louder the sound
 
Specifications:
Made of high quality ABS plastic, safe and durable.
Comes packaged, with rope-style adjustable lanyard
Pealess
Colours: Green
115 dB
Size: 2cm x 4cm x 2.2cm/0.79" x 1.57" x 0.87" (Approx.)
 
Package Includes:
1 x Whistle
1 x Lanyard