Radio Ear Muffs . Excellent FM reception . Ambient listening control, on/off & volume level . Radio tuning knob Radio control, on/off & volume level . Protect your hearing and listen to the radio - at the same time . Carry on a normal conversation in a variety of work situations, despite a noisy background-great for fluctuating noise levels . Blocks out higher frequency, harmful noise, but allows passage of harmless sounds, especially those in speech frequency range . Sudden noise impulses at harmful levels are immediately attenuated . Enable amplification of weak warning signals, speech or important sounds, and the amplification can be adjusted down to the "off" position.
CE, EN352-1, ANSI S3.19
Country of Origin：Taiwan,Taipei
Sales Method：Export ,Manufacture