Etymotic Research, Inc. is an engineering-driven research, development and manufacturing company has a device called ER-200 Personal Noise Dosimeter. With this device it will help you to judge how much damage you are causing to your ears just by living.
The Etymotic ER-200 Personal Noise Dosimeter comes with two modes; normal check it take 16 hours period and the quick check will take two minutes period, then calculates and displays the estimated dose per hour.
[ Via etymotic ]


