LL-Hearing Aid sound voice amplifier Earphone Long Ear Hook amplificador hearing device

الوصف

Max Sound Output: 129dB ± 4dBMax Sound Gain: 45dB ± 5dBHarmonic Wave Distortion: ?5%Frequency Range: 450~3500 hzInput Noise:  ?30dBBattery: A675  Zinc Air Battery                      Working Voltage: dc1.5V                     Working Current: ?3mA     Color: As the picture showsNet Weight: 8g   Features:Use of Zinc Air battery can work 25-30daysLow power consumptionVolume Control；On/off swicthMaximum sound gain up to 45dBAcoustic conducting pipeAccording to the user's ear size to cutting the acoustic conducting pipDifferent size noise prevention earplug