ALERT headphones on helmets

Peltor Alert helmet headphones, with ambient microphone and radio. They are comfortable and provide powerful protection against harmful noise.
They also provide increased safety with an ambient microphone that mutes loud sounds and amplifies weaker sounds so that you can communicate in noisy places.
Possibility to connect to mp3 player with cable.
You can buy extra sponges and pillows into the device.
Battery lasts for about 70 hours.

Noise reduction:
SNR = 30dB
H = 29dB M = 28dB L = 22dB

SNR = Mean value of hearing protection
H = Assessment of hearing protection due to loud noises
M = Evaluation of hearing protection due to intermediate frequency sounds
L = Evaluation of hearing protection due to low frequency sounds