Technical information

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WHAT DO THE MARKINGS ON
THE WATCH CASEBACK MEAN?
The casebacks on Citizen watches offer a variety of information you may need when
requesting parts, service, setting instructions or other information:
When Requesting
Replacement Parts:
When requesting parts from Citizen, you will
be asked for both the movement caliber and
case numbers. The sequence of characters
needed is ABCD-1234567. These numbers will
ensure we supply the correct part(s) for your
needs. Certain parts are not available for direct
sales and must be installed by an Authorized
Citizen Service Center.
When Requesting Setting/
Operating Instructions:
You will be asked for the Movement Caliber
Number which is the first 4 characters of the
Caliber/Case Number.
When Completing
Your Warranty Card:
You will need both the Movement Caliber/Case
Number and the Manufacturer’s Serial Number.
When Determining if Your Watch
is Water Resistant:
Water resistance is offered in varying degrees
based on the design and application of your
timepiece. The caseback will indicate the
degree of water resistance for your timepiece.
If there is no indication of water resistance,
you should be careful not to expose your time-
piece to moisture as it is not water resistant.
Please refer to the Water Resistance guide
found in our Frequently Asked Questions section
in the technical support section of our website
at citizenwatch.com.
When Trying to Locate
the Caseback Opening Location:
The last digit following the country of origin will
indicate the proper opening location for press
or snap-on type casebacks. We recommend only
qualified technicians remove the caseback of our
timepieces. Certain types of watches should only
be opened by an Authorized Service Center such
as Radio-Controlled, Satellite, Aqualand and other
models marked “Factory Service Only.” Removal of
the caseback by anyone other than an Authorized
Citizen Service Center may void the warranty.
Case Material
Manufacturer
Movement Caliber and
Case Number. Movement
Caliber is first 4 characters in
this sequence of numbers.
Indicates depth of water resistance
Manufacturing Codes
Country of Origin
Manufacturer’s Serial Number
Indicates depth of water resistance
Movement Caliber and Case Number.
Movement Caliber is first 4 characters
in this sequence of numbers.
Manufacturing Codes
Manufacturer
Case Material
Manufacturer’s Serial Number
Country of Origin
FREQUENTLY ASKED QUESTIONS
MOVEMENT CALIBER & CASE NUMBER:
Movement Caliber Number is the first 4 characters in this sequence of numbers.
HOW DO YOU MATCH AN INSTRUCTION
MANUAL TO A WATCH?
There are two ways to match the instruction manual to the watch:
■
Model number on tag
■
Movement Caliber Number on caseback
ON THE TAG:
Match the first 3 digits on the tag to the first 3 digits on the instruction manual, up to where the
“XXX” starts. (Note: There may be more than one model number on the instruction manual.)
ON THE CASEBACK:
Match the Movement Caliber Number on the caseback
to the Caliber Number on the instruction manual.
AT4008-51E
$595.00
INSTRUCTION MANUAL
Model No.AT4*
Cal.E650
CTZ-A8151