Loud Keychain Whistle

Please also take a look at my new Sports Fan Whistle - a full-fledged referee whistle with national colors.I have also developed real Ultrasonic dog whistles at 20,000 Hz and above, which you can find here.Description:This tiny whistle (only 4.8mm thick!) is extremely loud for its size and pretty sturdy. And it fits easily on any keychain.I uploaded profiles for dual color and for single color prints. WARNING:This is an emergency whistle and not a toy! It&#39;s extremely loud which can harm the ears, so please protect your ears and don&#39;t use it near other people or animals!Please also checkout my other <a target="_blank" href="https://makerworld.com/en/u/77030249/collections/87334" rel="nofollow noopen