Confortable.
> Coquille en ABS bleue.
> Coussinet PVC sensation cuir.
> Arceau réglable 3 positions.
> Poids : 186 g.
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Hz | Fréquence | 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 | ||||
dB | Affaiblissement | 14.7 | 9.8 | 14.6 | 23.2 | 27.0 | 31,0 | 38.6 | 36.6 | ||||
dB | Ecart type | 3,3 | 4.1 | 2.8 | 3.6 | 3,0 | 3.9 | 3,0 | 5.5 | ||||
Protection effective | 11.4 | 5.5 | 11,8 | 19.6 | 24.0 | 27.0 | 35.6 | 31.1 |