Кіраўніцтва карыстальніка Bluetooth-гарнітуры для абароны слыху EARMOR C30
EARMOR C30 Bluetooth Hearing Protection Headset Product Information Specifications Test Frequency (Hz): 125, 250, 500, 1000, 2000, 3150, 4000, 6300, 8000 NRR (Noise Reduction Rating): 27 dB Mean Attenuation (dB): 22.4, 25.8, 33.6, 32.9, 32.3, 40.0, 44.6, 44.9, 44.0 Standard…