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What does an “M3” or “M4” on the label mean?

April 26, 2017Label M3 M4 mean

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What does an “M3” or “M4” on the label mean?

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“M” refers to the device’s RF emissions level, and means the device is intended for use with hearing aids in microphone mode. The higher the “M” rating number on the device, the more likely you will be able to use the device with your hearing aid on the microphone setting.