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Custom In-the-Ear Hearing
Instruments
Getting Familiar With Your Custom In-the-
Ear Instruments
Your in-the-ear hearing instruments are custom-
fit to the contours of your ear. Red or blue
laser-etched numbers on the instruments’
shells denote the manufacturer, size, year
of manufacture, and the serial number. Red
numbers indicate the instrument is for the right
ear, blue is for the left.
In-the-Ear In-the-Canal
Electone FS
06E123456[L or R]
Microphone
Battery Door
Volume Control
On-Off Switch
Vent
Laser-etched
Serial Number
(on back side)
Laser-etched
Serial Number
(on back side)
Manufacturer Size of instrument
Year of manufacture Serial number Left or Right instrument
