The 3M Peltor Optime Push to Listen Earmuff - Headband, offers hearing protection with a manual listening function. The design is as simple as it is clever - pressing a button on the shell enables you to Reduce the attenuation to hear a conversation. The 3M Peltor Optime Push to Listen addresses one of the strongest needs at workplaces that require higher levels of hearing protection by allowing communication with colleagues without having to remove or lift the earmuff cups from the ear thus avoiding the risk of hearing impairment. It is an electronic passive muff which has one passive side and one electronic side. Simply push the button to listen, opening up the earmuff for communication. The electronic function automatically shuts off after 30 seconds and can be manually adjusted to close earlier if needed.