C-109 Behind-The-Ear Super Power BTE Hearing Aids
D-218 BTE Hearing Aids Digital Rechargeable Hearing Aid
| Product model | D-218 |
| Working voltage | 3.7V |
| Battery capacity | 55mAh |
| Endurance | About 20 hours |
| Maximum OSPL90 | ≤128dB+3dB |
| High frequency average OSPL90 | 115dB±4dB |
| high-frequency average | |
| Total harmonic distortion | |
| Frequency Response Range | |
| Equivalent input noise level | |
| Product size | 49×18.5×9.2 |
| Weight | 6.44g |
