Description
Hearing aid: when you see film, watch
the play, have meeting, or have classes,
the product can help you to hear the
sound clearly and loudly. while in forest,
if you want to hear very slight sound, it
will be a good choice.
Specification
— 1 hearing aid with 1 extra wire
and 1 receiver
— Max sound output: 130 + 5dB
— Sound gain: > 50dB
— Total harmonic wave
distortion: < 5%
— Frequency range: 300
– 4000Hz
— Input noise: <30dB
— Voltage: d.c. 1.5V
— Current: <4mA
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