Pocket hearing aid---"HA-93C/HA-93D" series have features as follows:
HA-93 series is with import parts and modern technology. They have attactive design, appearance with small size. And they are light, less noisy, also has fine fidelity and tone. Customers may have three choices of tone adjustment. These products are ideal hearing aids for the deaf, either of middle or heavy degree.
Technical Specifications: MODEL ITEM IDEX HA-93C Peak Gain ≥ 50 dB HA-93D Peak Gain ≥ 56 dB
HA-93C/93D Max Output ≤ 135 dB Total harmonic wave distortion ≤ 10% Equivalent Input Noise Level ≤ 32dB Frequency Range: 400~3500Hz Battery/Voltage/Current: AA/1.5V/6.8mA Volume: 7.4*4.6*2.2cm Weight: ≤ 38g(exclude battery) Direction: All directions Environment temperature: 5'C~40'C Relative Humidity: ≤ 80% Atmospheric Pressure: 86kPa~106kPa