Color:Black High-tech charging mode:A Design of Analog New hearing aid TechnologyConnect the USB to the charging box to make it fully energized.During charging, the lamp will turn blue.Once charged, the lamp turns white.Portable, USB Charging:Equivalent input noise level: <35 dBFrequency response range: 300Hz-3500HzMaximum sound output: 1109 + 4dBTotal harmonic distortion: <7%Six volume levels:Every time the level goes up, you hear the "beep" sound.At maximum volume, you will hear three "beeps".If pressed again, it will return to the lowest level.Long standby time:Operative time: 10-12 hoursCharging time: 90 minutes to 2 hoursCharging case charging time: 90 minutesHearing Aid Charging Time (Dual): 3-4 timesThe package includes:2x Hearing Aid (Left Ear, Right Ear) 1x Charging Box1X USB cable;6 x earplug1X English User Manual
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