Behind-the-ear hearing aid 701a

Maximum sound output: ≤112dB ±4dB High frequency average: 108dB ±4dB Full range sound: 42dB ±5dB Total harmonic distortion: ≤1% Frequency response range: 200Hz ~ 750Hz Equivalent input noise level: ≤17dB ±2dB Consumption: 2.5mA 8-channel digital high-definition quality, adaptive noise reduction system, high-fidelity reproduction of human voice, comfortable to wear, invisible and beautiful.

701b in-ear hearing aid

Maximum sound output: ≤127dB ±4dB High frequency average: 108dB ±4dB Full range sound gain: 33dB ±5dB Total harmonic distortion: ≤1% Frequency response range: 200Hz ~ 7500Hz Equivalent input noise level: ≤17dB ±2dB Consumption: 2.5mA 8-channel digital high-definition sound quality, adaptive noise reduction system, touch control, hearing aid single endurance 20 hours, with charging box endurance 60 hours

Behind-the-ear hearing aid 702a

Maximum sound output: ≤110dB ±4dB High frequency average: 105dB ±4dB Full range sound: 40dB ±5dB Total harmonic distortion: ≤3% Frequency response range: 200Hz ~ 750Hz Equivalent input noise level: ≤32dB ±3dB Consumption: 2mA High cost performance, the best in analog machines potential best-selling champion,