Details
echnical specification:
Mini wireless earpiece receives signal by inductive coil.
across electromagnetic fields
Receiving distance: 50-70 cm
Standard Zinc-air battery: type 337
Battery life: about 5-8 hours
Audio bandwidth: from 300 Hz to 4 KHz
Distortion: <2%
Working frequency: all frequencies
Distance between inductive coil and Mini wireless earpiece: about 30-50cm
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