3M™ Peltor™ PTL™ Earmuffs, H7A-PTL, help provide hearing protection, yet allow temporary listening to outside voices and sounds without removing the headset. An earcup button with a listening mode eliminates the practice of “lifting off” the headset when talking with or listening to another person. Simply press the push-to-listen button located on the earcup to provide a 30-second boost in the volume of conversation and other sounds. Workers needing to talk over details of a job or receive instructions can keep the hearing protectors on. An auto-switch returns earmuffs to normal hearing protection mode after 30 seconds. With a Noise Reduction Rating (NRR) of 26 decibels, these hearing protectors provide relief in environments with high noise levels. Wide, liquid/foam filled earmuff cushions fit gently to help create a comfortable, noise-blocking seal. *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided.