Howard Leight by Honeywell Electronic Ear Muff, Folding Sound Amplification Over-the-Head, Series: Impact Sport, 22 dB Noise Reduction, Black, AAA Battery.Honeywell Impact Sport by Howard Leight by Honeywell keeps wearers protected from hazardous noise and connected to their environment. Impact Sport employs built-in directional microphones that amplify range commands and other ambient sounds to a safe 82 dB, providing more natural listening and enhancing communication. For protection, Impact Sport actively listens and automatically compresses amplification when ambient impact sound reaches 82 dB and passively blocks out noise at 22 dB.