3M 7000002327 earmuff is a hard hat attached hearing protection device with an attenuation rating of 30.0 decibels. It is designed in earmuff shape, making it comfortable to wear. This product is suitable for use in industrial settings as it is CSA Class AL rated and provides noise attenuation. The earmuff is not metal detectable, electrically insulated, or dielectric. It is not corded or moisture resistant. This cap-mount earmuff does not have Bluetooth capabilities but is compatible with noise attenuating headsets. It is the ideal choice for workers in need of hearing protection in noisy environments.