Enlarged hearing health earphones enhance ear sound protection for the elderly with hearing loss and tinnitus

1.Max sound output:1 18+4dB

2.Sound gain: >32dB+2dB

3.Total harmonic wave distortion: <7%

4.Frequency range:300-4500MHz

5.Input Noise:<32dB

6.Voltage:d.c.3.7V

7.Current:<2mA

8. Full charging about 2-4 hours

Your estimated delivery time will be 4-7 business days (excluding weekends and bank holidays) from the time of order. For more details plz contact us via email or WhatsApp.