3M 7100204442 is a protective communication product that offers hearing protection in the form of earmuffs. With an attenuation rating of 25 dB, it effectively reduces noise levels. The product features a wired connection, making it easy to use and operate. It is not intrinsically safe and belongs to CSA class B. The battery, which can be either AA or rechargeable NiMH pack, provides approximately 20 hours of usage. It weighs 394 g (13.9 oz) and does not have Bluetooth or an external audio input. It supports communication via a built-in two-way radio and has a built-in mic of electret type.