Enhance your situational awareness with these safety earmuffs that combine FM radio with advanced sound amplification capability. These Howard Leight Sync Electo Digital Radio Earmuffs feature separate radio and sound amplification knobs. Ambient Sound up to 82dB is Enhanced: Stereo microphones amplify and enhance ambient sound up to 82dB, so you can hear alarms, voices, and other important communication more effectively. Ambient Sound over 82dB is Reduced: For ambient noise exposure over 82dB, passive hearing protection is used to reduce exposure to hazardous noise. LCD Display: LDC display with auto-search radio function makes finding stations easy. Easily Customizable: Allows 10 pre-set stations and volume memory. Use Your Own Music Device: Includes 3.5mm auxiliary input cable for your personal music device.