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Yes!
After you begin blowing the HyperWhistle, the air clears the chambers and allows the whistle to sound underwater.
An interesting side note: Sound travels faster in water than in air, so the HyperWhistle frequency is higher underwater.
Very Simple! Just send in your picture to our Media.
Just tag us
Instagram: @hyperwhistleusa
Facebook:@hyperwhistle
Give us 2-3 days to process the image and then look for it on our Website, and Media pages.
Please contact us directly for International Shipping options.
Email: quentin@wattre.com
Contact:
HyperWhistle
9301 Roberts rd.
Woodburn, IN 46797
