Acoustic filter 15 dB attenuation Integrated Loudness Correction - Sound fidelity CRITT/CE standard: meets all applicable standards Recommended by occupational medicine Long-life - Interchangeable silicone domesSustainably mined materialsHypoallergenic jewelryMade in France by Bermudes - Atelier Parisien de Haute JoaillerieRJC Labellisé Entreprise du Patrimoine Vivant
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