Tip & How-To about Watches

"Self-winding" Automatic mechanical watches that don't run.

Many questions are posted about watches that don't run or just run for a few seconds or minutes. If it's a quartz/digital watch you need to have the battery replaced. If it's a mechanical watch - even a high end "perpetual" watch like a Rolex, you'll need to manually wind it. Self-winding, or automatic, watches have a rotor in the case that spins as your arm/wrist moves throughout the day. The motion of the rotor winds the watch. When the watch is left unworn for a day or you spend your day just reading a book or otherwise remain inactive, the watch runs down. To restart it and provide a power reserve, simply wind the watch manually by turning the crown clockwise about 40 turns. It should run fine as long as you stay active. If you don't wear the watch everyday and don't want to have to wind and reset it every time you put it on, you can buy a watch winder to keep it moving. You can find them for under $100 on ebay for basic models and for more money you will see ones that wind multiple watches and have nice decorative cases.

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Instructions for a Seiko Alarm Chronograph Watch A158-5040A?

Question moved from Lands Phones category.

SEIKO - A158 5040

Digital Watch Library http://www.digitalwatchlibrary.com > DWL > seiko-a1...

SEIKO - A158 5040 - Digital. Released in 1978 Vintage Digital Watch - Brought to you courtesy of digital-watch.com.

SEIKO QUARTZ Cal. A159 Alarm Chronograph

My Retro Watches https://myretrowatches.co.uk > uploads > 2020/09
The A158 Alarm Chronograph model can be set to give a time signal ... QUARTZ. ALARM-CHRONOGRAPH. START/STOP. DATE/SELECT. STOP-ALARM. WATCH SET TIME SET LAP STOP ...
3 pages

Missing: 5040A ‎' Show results with: 5040A

Instruction ' Seiko Watch Corporation

SEIKO WATCH https://www.seikowatches.com > customerservice > ins...
Seiko is one of the few fully integrated watch manufactures. We design and develop our own movements using leading-edge technology.
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breitling galactic unitime losing time

Hello Aleks,

My personal opinion:
Take it back (undo your "new" purchase).

Real watch movements DO NOT have the accuracy
of "QUARTZ" watches...!!

If you have a WARRANTEE that allows for higher
expectations... I would say TAKE IT back
immediately..!!

Worse than dropping a few SECONDS from your
watch...you are wasting time from your LIFE tribulating over nonsense

Breitling Caliber B35 (automatic) specs: watchbase.com/breitling/caliber/b35

Movement: Automatic
Display: Analog
Diameter: 36.60
Jewels: 41
Frequency: 28800
Date: Date
Hands: Hours, Minutes, Seconds, World Time
Additionals: Chronometer

Description
The Breitling caliber B35 is a new movement that was launched at BaselWorld 2015. It is an in-house (manufacture) movement with worldtime functions; it is also the first in-house Breitling movement not to feature a chronograph. It measures 36.6mm across at a height of 7.8mm.

If you purchased your UNITIME for accuracy
you skipped over some VASTLY SUPERIOR
quartz watches that would better suit your
EXPECTATIONS... ( for $$$ thousands less ).
Breitling Caliber B35 is a very nice movement...
(I think you need a QUARTZ... digital)...

ALL in my opinion!
https://en.wikipedia.org/wiki/Carnac_the_Magnificent
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should i pull the crown to save battery if i store my quartz watch for a few months

I don't think storing a watch with the crown out accomplishes much. That I am aware of, pulling the crown out does not break the electrical connection between the battery and the watch. At least in looking at quartz movements, I don't see any electrical apparatus that insulates the crown in any way so that it could act as a switch. I think that in quartz watches that hack, pulling the crown out mechanically disengages or interferes with the drive train, but it doesn't stop the oscillator or stepper motor from running.
With quartz movements, at least those I have seen the internals of, (most ETA and ISA designs, some Rondas, a few Seikos), pulling the crown to the setting position does one of two things:
1) On better, jeweled movements - it breaks contact between the coil and battery, thus stopping the motor. The oscilator continues to be powered, but most of the current consumption is from the motor. These pulling the crown out does save battery life. Or,

2) On cheaper non-jeweled movements - it blocks the rotation of the second hand gear, and stalls the motor. These are observable by a "twitchy" second hand when the stem is out. This method actually kills the battery faster, as a stalled electric motor draws more current.
May 08, 2011 • Watches
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second hand stops for a few seconds and then starts again over and over again

Try manually winding it (assuming it's not a quartz watch). If a mechanical watch is not worn daily it will run down and need to be manually wound to get going. Turn the crown clockwise about 40 turns.
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