3M 7100204433 is a Protective Communication product, specifically Earmuffs. It has an attenuation rating of 27 dB, offering excellent hearing protection. With its wired and wireless connection type options, it provides versatility and convenience. The lithium-ion battery offers an approximate 18-hour battery life, and the Bluetooth capability enables easy communication via external 2-way radio and compatible radio brands like Kenwood and Motorola. Additionally, it features level-dependent function for ambient listening and a built-in 2-way radio. Its headband suspension method and dynamic microphone ensure comfort and clear communication.