Max saturated sound pressure level: (±4dB)129 Full-on acoustic gain: (±5dB)28 Equivalent noise: ? 25 dB Harmonic distortion: ?5.5% Frequency response: 100 ~ 3000 Hz Battery: AG5 button battery Voltage: 1.4V Rated current: ? 1.6 mA
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1 x Hearing aid 3 x Ear cushions 2 x Button batteries 1 x Englsih user manual In original package