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Hearing level: Mild to moderate
Standard frequency: 1,600Hz
90dB maximum output sound pressure level (peak hour): Less than peak value 127dB
The most crash gain: 43dB ± 5dB
Equivalent input noise level: Less than 26dB
Use Battry: PR41
Battery life (continuous duty time): About 160 hours
Contents: Main unit, battery, case, cleaning brush.
