Digital hearing aid 838
Specification:
Digital circuitry
Mini BTE design
Air conduction
Left and right ear adjustability
Digital Volume control
High or low tone control
Product size: 55x35x10mm
Weight: 4 g
Max. saturation sound pressure level(SSPL): 130dB±4dB
Full on Acoustic Gain:

Digital hearing aid 638
Specification:
Digital circuitry
Mini BTE design
Left or right ear adjustable
Detachable receiver
Digital Volume control
High or low tone control
Product size: 55x35x10mm
Weight: 7g
Testing Item Indicator
Max. saturation sound pressure level 130dB±4dB
Rated

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