Plooibare geluidsdemper
>> Gele ABS gehoorklep.
>> PVC kussens met leder afwerking.
>> Plooibaar en uittrekbare hoofdband, pocket model.
>> gewicht : 250 g.
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| Hz | Frequency | 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 | ||||
| dB | Mean attenuation | 12.9 | 11.3 | 14.6 | 22.4 | 29.7 | 34.7 | 43.9 | 43.1 | ||||
| dB | Standard deviation | 4.5 | 3.2 | 4.2 | 3.4 | 3.2 | 3.5 | 5.6 | 6.5 | ||||
| Effective protection | 8.4 | 8.1 | 10.4 | 18.9 | 26.5 | 31.2 | 38.3 | 36.7 | |||||
