Industrial Use: For hearing protection in noise workplaces
General Use: For focusing on studying, reading, and reducing stress-causing everyday noise
Noise Reduction Rating (NRR): 22dB
Weight: 6.5 oz. (184g)
Cup thickness: 1.8 inches (46 mm)
Band expansion width: 1.4 inches (35 mm) (both left and right)
Standards: ANSI S3.19-1974 Compliant
Materials: Headband: Stainless steel, thermoplastic, polyester, polypropylene, polyacetal resin, Cup: ABS resin, thermoplastic resin, Insert: Polyurethane, Ear pads: Polyurethane, Vinyl chloride, ABS resin
Size and weight are a reference value and are not the guaranteed.
Frequency (Hz) / Noise Reduction Rating (dB) / Standard deviation (dB): 125/16.0/5.2, 250/18.3/3.1, 500/27.7/3.0, 1000/37.6/3.5, 2000/35.1/2.8, 3150/42.2/42/2.2. 8, 4000/41.4/2.6, 6300/39.4/2.6, 8000/39.3/3.8