ACME Unisex Adult Tornado T200 Whistle - Black, One Size

Probably the best whistle on the market, all depends on the user, can silence a pool hall with 400+ people in if blasted loud enough

I’m a PE teacher and have had 3 of these over the last 20 years. They last forever, you can modulate the sound easily but also cut through any background noise even over large distances to instantly get everyone’s attention. Useful in swimming pools, sports halls and outdoors on windy fields. I’d never buy anything else. No wonder they are used by FIFA referees in huge stadiums with tens of thousands of people in them!

Does what it says on the tin - very loud, but not a warbling whistle more of a screech....... But won't be affected by water.

Great

I bought this whistle for my partner after hearing it recommended on radio2's chris evans show. when it arrived I blew it in her ear and she went deaf for 2 days. far too loud but probably more effective than mace

Very loud. However only 1 volume can lower or increase volume with blowing lighter and won't make a sound

This whistle is the most weak and feeble one I have come across. I am sticking with my trusty ACME Thunder which has never let me down.

Nice and loud when required. As a football referee volume can be controlled for minor to major incidents by blowing strength.