Certina PRECIDRIVE GMT Quartz User manual

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PRECIDRIVE GMT Quartz
User's Manual
6
4
2
5
1
3
IA IB
* Models with screw-in crown:
IA Initial position (screwed in, not pulled out)
IB Neutral position (unscrewed, not pulled out)
Displays and functions
GMT display (2nd time zone – 24 h)
Hour hand (local time)
Minute hand
Seconds hand
Date indicator
3-position crown:
I
Rest position (screwed in*, not pulled out)
II Date setting position (unscrewed*, half pulled out)
III Time setting position (unscrewed*, completely pulled out)
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PRECIDRIVE GMT Quartz
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Congratulations!
We congratulate you on choosing a watch from CERTINA®, a Swiss brand among the most highly renowned in the world. Meticulously designed, using only
the highest quality materials and components, it is protected against impacts, temperature variations, water, dust and also features the DS concept.
This user manual applies to CERTINA®quartz watches equipped with the PRECIDRIVE F06.421 GMT movement. For the settings and operation of your
PRECIDRIVE watch, please refer to the instructions below.
To ensure that your watch operates with perfect precision for many years to come, we advise you to pay careful attention to the advice given in this user
manual.
The DS (Double Security) concept is characterised by:
– extreme impact resistance,
– an ultra-resistant sapphire crystal,
– a gasket inside the crown and a gasket around the winding stem guaranteeing the water resistance of the watch even when the crown is pulled out,
– a reinforced case back.
Settings
Models with screw-in crown
To ensure even better water resistance, some models are fitted with a screw-in crown (6). Before setting the time or date, you must first unscrew
the crown (6) to position IB, before pulling it out to position II or III.
Important : After each operation, you must always screw the crown back in to ensure that your watch remains water-resistant.
You are advised not to operate the crown (6) underwater.
Setting the GMT display (2nd time zone)
• Pull the crown (6) out to position III; the seconds hand (3) will stop.
• Turn the crown (6) forwards or backwards to simultaneously set the GMT display (2nd time zone) (1) and the minute hand (4). Don't worry
about setting the hour hand (local time) (2) or date hand (5) at this stage.
• Push the crown (6) back into position I. The seconds hand (3) will start running again.
• The GMT display (1) and minute hand (4) are now set.
Rapid date correction and local time setting
• Pull the crown (6) out to position Il. The seconds hand (3) will continue running.
• Turn the crown (6) forwards or backwards until you obtain the desired date. The hour hand (2) will advance in one-hour jumps and the date will change
whenever the hour hand passes midnight.
• When the date is set, continue turning the crown (6) to position the hour hand (2) to the desired local time.
• Push the crown (6) back into position l(and screw it back in if you have a screw-in crown model).
Advice for synchronising your watch
To synchronise the seconds hand (3) with an official time signal (radio/TV/Internet), pull the crown (6) out to position III; the seconds hand (3) will stop.
At the tone, push the crown (6) back into the rest position I.

PRECIDRIVE GMT Quartz
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This reference time was used for much of the 20th Century, before being replaced by the more precise Coordinated Universal Time (UTC), in 1972.
Though regularly used as a synonym of UTC+0 due to its similarity, GMT is different since it is measured as a function of the Earth's rotation,
whereas UTC uses atomic clock technology.
In the world of watchmaking, the acronym GMT is used when a watch has a second time zone display on its dial; you can choose the one you want.
Technical information
Winding
Quartz watches do not need to be wound.
PRECIDRIVE
PRECIDRIVE quartz watches, from CERTINA®, can boast not only the incomparable precision of quartz, but also their temperature variation compensated
(thermo-compensated) rate, as well as being insensitive to moisture. This enables them to achieve a precision of around +/-10 seconds per year (under normal
conditions of use).
EOL function - (End of Life)
When the seconds hand is jumping every 4 seconds, your chronograph is telling you that the battery has reached its end of life, and will soon need to be
replaced.
Care and maintenance
We would advise you to clean your chronograph regularly (except for the leather strap) using a soft cloth and lukewarm soapy water. After immersion in salt
water, rinse it in fresh water and leave it to dry completely.
Do not leave it anywhere subjected to high variations in temperature or humidity, direct sunlight or strong magnetic fields.
We would advise you to have your watch inspected every 3 to 4 years by an approved CERTINA®representative or retailer. To enjoy impeccable maintenance
service and ensure the guarantee remains valid, always consult an approved CERTINA®representative or retailer.
If you plan not to wear your chronograph for several weeks or months, we would advise you to store it with the crown pulled out to position III.
This cuts the electrical power supply to the motor, thereby extending battery life considerably.
Replacing the battery
The autonomy of a PRECIDRIVE chronograph from CERTINA®is generally more than 2 years in continuous use. Once the battery has been drained, it must be
replaced without delay by an approved CERTINA®representative or retailer.
Battery type: silver oxide and zinc button cell, 1.55 V, No. 371, SR 920 SW.
Collection and treatment of end of life quartz watches*
This symbol indicates that this product should not be disposed of as household waste. It must be returned to an approved collection point. By following
this procedure you will contribute to safeguarding the environment and human health. Recycling the materials will help to conserve natural resources.
*valid in EU member states and in any countries with corresponding legislation.
GMT function
Traditionally, the term GMT is used to designate Greenwich Mean Time.