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Manual Oris 125 Joor FCB Begränzti Uflag Watch

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Manual

English

Accuracy.

Mechanical watches measure

time accurately and reliably.

However, in circumstances where

optimum accuracy timekeeping

is required at all times, the

mechanical watch is not the best

instrument for the job. Time is

important to the wearer of a

mechanical watch, but accuracy

to the nearest second is not

something the wearer is likely to

lose sleep about.

The accuracy rate of a mechanical

watch depends on the type of

movement used, on the wearer’s

personal habits and on fluctuati-

ons in the ambient temperature.

Oris watches are checked and

set in the workshop, so daily rate

variation is within a tolerance

range of – 5 to + 20 seconds per

day. Chronometers are set and

tested to tighter tolerance ranges

than this (see Chapter on ‘Oris

Chronometers’).

If a watch is not keeping to time

within these limits, it can be set

by an approved retailer or at

the Oris service centre in your

country. During the guarantee

period, this service is free of

charge.

Notes.

Chronometer.

A Swiss watch can only be

designated as a chronometer if

its Swiss watch movement has

satisfied a test as per the

standards NIHS 95 -11/ISO 3159

and conducted by the independent

Swiss Observatory’s Contrôle

Officiel Suisse des Chronomètres

(COSC).

The chronometer test at the COSC

takes 15 days. All tests are

conducted at an ambient humidity

of 24 %. Every 24 hours, the

variance is measured, then the

movements wound and reset. On

the tenth day of this test, any

complications on the watch, such

as the chronograph, are switched

on to determine the movement’s

operating rate accuracy. The

movement rate is determined in

five different positions and at

three different temperatures, as

shown opposite.

If the movement passes the test,

it receives a certificate confirming

its rate accuracy and its status as

a chronometer. Every movement

is identified with an engraved

number and a COSC certification

number.

Day0123456789101112131415

Pos. 6 H 3 H 9 H F H C H 6 H

T °C 23 23 23 23 23 23 23 23 23 23 23 8 23 38 23 23

R(s/d) R1 R2 R3 R4 R5 R6 R7 R8 R9 R10* R11 R12 R13 R14 R15

*Any complications are activated.

Test criteria Ø (mov.) Ø (mov.)

All figures in seconds (s) per day (d) Abbrev. > 20 mm < 20 mm

Average daily rate

(in 5 different positions) Mmoy – 4 to + 6 – 5 to +8

Average rate variation

(average daily rate difference in 5 positions) Vmoy max. 2 max. 3.4

Largest rate variation

(difference between two rates in the same position) Vmax max. 5 max. 7

Flat-suspended difference

(between horizontal and vertical position) D – 6/+ 8 – 8/+ 10

Largest difference

(between average daily rate and rate in one of the 5 positions) P max. 10 max. 15

Thermal difference

(variation per °C of temperature difference) C ± 0.6 ± 0.7

Rate reproduction

(difference between average variation on day 15 and

average variation on the first two days of the test) R ± 5 ± 6

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Specifications

Brand	Oris
Model	125 Joor FCB Begränzti Uflag
Category	Watches
File type	PDF
File size	1.19 MB

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Frequently Asked Questions about Oris 125 Joor FCB Begränzti Uflag Watch

Our support team searches for useful product information and answers to frequently asked questions. If you find an inaccuracy in our frequently asked questions, please let us know by using our contact form.

A battery in my device is oxidized, can I still safely use it? Verified

Ja, the device can still be safely used. Firstly, remove the oxidizd battery. Never use bare hands to do this. Then clean the battery compartment with a cotton swab dipped in vinegar or lemon juice. Let it dry and insert new batteries.

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My mechanical watch runs fast, what can I do? Verified

This might be caused by exposure to a magnetic field. It can be solved by a demagnetisation process performed by a professional watchmaker.

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What do AM and PM stand for? Verified

AM stands for Ante Meridiem and indicates that the time is before midday. PM stands for Post Meridiem and indicates that the time is past midday.

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What is a 'Chronograph'? Verified

A 'Chronograph' is literally a 'writer of time'. The term is used to describe clocks and watches that tell the time of day as well as measure a certain period of time, like a stopwatch.

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What is GMT? Verified

GMT stands for Greenwich Mean Time (sometimes called UTC, standing for Coordinated Universal Time). It is the time for the longitude 0, that passes through Greenwich near London.

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What is a quartz movement? Verified

Watches and clocks with a quartz movement are driven by a battery. This sends an electric current through quartz crystals that will vibrate. These vibrations are passed on to the movement. Because the vibrations have a fixed frequency, watches and clocks with a quartz movement are extremely precise.

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