Pair of 2 Wireless Invisible Nano Sound Enhancer Hearing lifier

Feature:
Peak OSPL 90(dB SPL):117dB
HAF OSPL 90(dB SPL):110dB
Peak Gain(dB):32dB
HAF/FOG Gain(dB):29dB
Frequency range(Hz):300-3500Hz
Distortion:500Hz:3%800Hz:3%1600Hz:3%
Equivalent Input Noise (dB):25dB
Voltage: D.C.3.7V
Current: <1.5mA
Charging Time(H):4~6hWorking Time(H):20hBattery: Built-in Lithium BatteryCurrent:1.5mASize:15x10x20mm

Packing List:
2x hosts
1X Charging Case
6x earbuds
1x brush
1x USB charging cable
1x English instruction manual

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