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  1. Cambridge Mask Co.
  2. Hummm Sound
  3. Product Information

Product Information

  • What comes in the packaging?
  • Does Hummm Sound help with tinnitus?
  • Where and when can Hummm Sound be used?
  • Is there any certification or test?
  • Is it safe for children?
  • How do I select the fit size for myself?
  • I can hear myself talk when I wear Hummm Sound, is this normal?
  • How many hours can I wear Hummm Sound per day?
  • Is Hummm Sound latex free?
  • What are Hummm Sound earplugs made of?
  • Can I buy spare filters?
  • Can I change the filter?
  • Does it come with User manual?
  • What is the lifespan of Hummm Sound earplug?
  • What makes it different from other earplug product?
  • What is the attenuation level of Hummm Sound filters?
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