Amazon Customer Questions and Answers for Referee Whistle :
Question_1:
would i be able to use this in an indoor trampoline park ?
Answers_1:
I'm assuming its quite a big indoor place so it will work perfectly. However if you use in a small room it will hurt your ears. This a very loud whistle. You can but the pitch is very loud so be careful using this too close to the patrons.
Question_2:
would this be suitable for use in a playground?
Answers_2:
Ideal for the playground.
superb whistle. It's quite loud, maybe better to use a whistle with a ball in it.
Question_3:
Does it have a power supply ?
Answers_3:
No, it's just a whistle personal use
Question_4:
can this be used to scare away coyotes?
Answers_4:
I guess it could be, if blown properly it can be ear piercing. But I am no coyote expert.
Question_5:
What is the decibel rating?
Answers_5:
Loud! It hurt my ears when blew it as hard as possible. Estimate 130dB.
Amazon Customer Feedback Referee Whistle :
Feedback_1:
Ordered for my son for use as a junior referee.
It appears to be a good loud whistle. I did not realise that it was being shipped from the USA. Delivery took about 3 weeks, the supply did confirm dispatch and was not far out with estimated delivery.
If you need a whistle and can wait for delivery then this is worth looking at.
Feedback_2:
Perfect For Leading Sports
As a Sport Leader/ Young Ambassador, this whistle is perfect as it is very loud and the primary and secondary students listen to it and stop straight away, I mainly use this whistle when we host and referee football tournaments.
die pfeife hat eher ein dumpfes statt ein grelles pfeifen und ist daher bisl angenehmer für ohren
Feedback_3:
Brutally high and loud. Ear drums beware. Perfect for a survival whistle!
ar-splitting. Seriously, do not use indoors, you'll decimate your ear drums.
Higher pitched than I expected; Originally wanted to use it for marshalling (referee whistle) but instead packed it into my survival/camping bag as an emergency whistle - there is absolutely no way at all people walking on the same mountain as you will not hear this. Tested with a friend in the countryside, could be heard an obscene distance away.
Feedback_4:
Great for windy days
Great whistle for windy, I use it for coaching football and wrestling.