3M 7000009669 is an over-the-head earmuff designed for hearing protection. With an attenuation rating of 27.0 decibels, it effectively reduces noise exposure. The CSA Class AL certification ensures high-quality performance. This product is not metal detectable, electrically insulated, or moisture resistant. It is also not corded, Bluetooth-enabled, or dielectric. However, it does feature noise attenuating headsets. With its comfortable over-the-head style, it provides a secure fit for extended periods. Overall, the 3M 7000009669 earmuff delivers reliable hearing protection for various applications.