Volume-Limiting Headphones
Sounds louder than 85 decibels can cause hearing loss, but most digital music players can exceed that threshold. Headphones and ear buds from iHearSafe of Milford, NH, have a volume-limiting circuit hardwired into the cord. Unlike the software that some concerned parents have used to cap the volume of their kids’ music players, the hardwired circuit can’t be digitally circumvented.

Credit: Joshua Scott
Product: iHearSafe ear buds,headphones, and ear clips
Cost: $19.99 for ear buds and $24.99 for headphones or ear clips
Source: www.ihearsafe.com
Company: iHearSafe
Other products in this section:
Keep Reading
Most Popular

A quick guide to the most important AI law you’ve never heard of
The European Union is planning new legislation aimed at curbing the worst harms associated with artificial intelligence.

It will soon be easy for self-driving cars to hide in plain sight. We shouldn’t let them.
If they ever hit our roads for real, other drivers need to know exactly what they are.

This is the first image of the black hole at the center of our galaxy
The stunning image was made possible by linking eight existing radio observatories across the globe.

The gene-edited pig heart given to a dying patient was infected with a pig virus
The first transplant of a genetically-modified pig heart into a human may have ended prematurely because of a well-known—and avoidable—risk.
Stay connected

Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.