Rechargeable Hearing Aid Machine for Ear with Bluetooth Connectivity | Bluetooth Hearing Machine

Specification :

Bluetooth Rechargeable Hearing Machine

High frequency average total sound pressure level OSPL 90 (dB): 120dB±4dB High-frequency average full-range sound gain: 38dB±5dB Frequency range: 3500Hz-500Hz Total Harmonic Distortion: ≤8% Battery type: rechargeable lithium battery Battery capacity (headphone): 45mAH Charging time (headphones): 2 hours Headphone use time: 15 hours Suitable for both ears: yes