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According to ANSI Standard S3.22 1996
Maximum SSPL90: 103 dB
HFA-SSPL90: 101 dB
HFA-full-on Gain: 17 dB
Reference Test Gain: 17 dB
Frequency Range: 200 Hz to 6000 Hz
Equivalent Input Noise: 24 dB
Total Harmonic Distortion: 500Hz: 3%, 800Hz: 8%, 1600Hz: 2%
Operating switch: Case switch
Battery Type/Voltage/Current/Life: 312, 1.3V, 0.5mA, approx. 280 h
Dimensions: 1.35 × 1.03 × 2.4 cm
Weight: 1.8 g (excluding battery)
Contents: Main unit, case, battery, cleaning brush
