In-ear Low-noise Hearing Aids USB Charging Digital Display Sound Collector-Black

Dragon
In-ear Low-noise Hearing Aids USB Charging Digital Display Sound Collector-Black
1.Max sound out put:111+/- 5dB 2.Sound gain:>= 30dB+/- 5dB 3.Total harmonic wave distortion:<= 5% 4.Frequency range: F1≤200Hz, F2≥5000Hz 5.Input Noise:<=28dB 6.Voltage:d.c.1.5V 7.Current:<=1.2mA 8. Full charing in 2~3 hours, working more than 30 hours 9. The 300mAh recharging box for 3 times recharging to extend hearing amplifiers with 90 hours working. 10. The recharging box with power capacity LED display Note: To protect your hearing, please don't use this product at a high volume for a long time. Not suitable for the crowd 1.According to the average frequency of pure tone audiogram language frequency calculation, or in the 0-30dbwithout the use of hearing aids 2.Sudden deafness,especially occurring within three months 3. Tinnitus, unilateral or bilateral 4.Rapidly progressive hearing loss 5.Obscure aural crowds with unexplained hearing 6. Serious binaural otitis externa, otitis media, pus,and double external auditory canal closure TIPS: The actual color and shape of the item might looks slightly different from pictures because of the technical improvement and manufacturing variance or Computer screen color difference.