C-109 Behind-The-Ear Super Power BTE Hearing Aids
E-310 Rechargeable Hearing Aid Seniors Noise Cancelling Volume Control Comfortable Amplifier Ear Hearing
| Product model | E-310 |
| Working voltage | 1.3V |
| Battery capacity | |
| Endurance | |
| Maximum OSPL90 | ≤129dB + 3dB |
| High frequency average OSPL90 | 110dB±4dB |
| high-frequency average | 42dB±5dB |
| Total harmonic distortion | ≤7% + 3% |
| Frequency Response Range | 450Hz - 3000Hz |
| Equivalent input noise level | ≤29dB + 3dB |
| Product size | 31.4*13.5*17.9 |
| Weight | 5.3g |
