Arptur D9 Series - Hear Better In 4 Steps; Steps for Optimal Hearing

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Hear Better In 4 Steps
STEP 1: Dome size
STEP 2: Programs
STEP 3: Volume
STEP 4: MAINTENANCE
A right size eardome would feel secure and tight in your canal.
Choose the right program for your environment.
Slowly increasing the volume as needed.
Clean your devices regularly and replace eardome as needed.