Polaroid Digital AIR 3D, Use And Maintenance Manual

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Open the battery compartment door.
Do not push too hard, to avoid damage
to the compartment.
Choose the most suitable earbud
between the three different sizes
available (S-M-L). If this is your first
time using the device, you may want
to try M size earbuds first. Assemble
by pressing the earbud (D) on the BTE
tubes (B) or (C) .
B - C