Max Sound Output: 129dB ± 4dB Max Sound Gain: 55dB ± 5dB Harmonic Wave Distortion: ?5% Frequency Range: 250?3800 Hz Input Noise: ?30dB Battery: AG13 Working Voltage dc1.5V Working Current: ?4mA Net Weight 10g
Note: Adjust volume to the minimum before wearing. Choose an earplug of slightly bigger size to avoid whistler. Increase volume gradually to avoid sudden increase in sound. If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage. Keep the ear plug clean Remove the battery if you don’t use it for long time.
Weight: 10g, small size, Bluetooth-type hearing aid, high concealment, allows you to more confident into the community and work for hearing loss, hearing impairment of the crowd
Material: the use of medical grade environmental silicone earplugs, soft touch, comfortable to wear, material, anti-fatigue and durable
High-definition sound, digital chip, intelligent noise reduction, simple operation, a key volume adjustment, stylish streamlined design, clear voice
Using digital signal processing technology, automatically adapt to the environment, improve voice clarity, sound real,
Small standby time is longer, a battery life of 600 hours, low-frequency noise reduction, simple operation, wireless stealth