Kerbl 34490 Ear Defenders Electronic SNR 27 dB Noise Cancelling

• Work as normal ear muffs with an insulation value of 27dB (SNR).
• The microphone can easily receive signals and speech in frequency range 400 ~ 4000 Hz for optimal communication in the surroundings.
• At 82 dB the headphones automatically switch off.
• Once the sound has ended, the microphone switches back on automatically.
• Soft, padded headband

Electronic Noise Cancelling Ear Defenders, SNR = 27dB. Use as normal ear muffs with an insulating value of 27dB (SNR). The microphone can easily receive signals and speech in frequency range 400 ~ 4000 Hz for optimal communication in the surroundings. At 82 dB the headphones automatically switch off. Once the sound has ended, the microphone switches back on automatically. Soft, padded headband. Suitable for working with loud machines, climbing, hunting etc. Supplied with 2 x AA batteries (1.5 V)