Miyota Js06

Miyota Caliber JS06

Miyota Js06

Manufacturer Miyota (Citizen)
Caliber Number JS06
Type Quartz
Diameter 12.5”’ (28.2mm x 26mm)
Casing Diameter
27.6mm x 26mm
Height 4.30mm
Total Height
6.95mm
Battery Cell Number SR621SW (364)
Battery Life Approximately 2 years
Frequency 32,768Hz
Quartz Type Tuning fork type quartz crystal
Stem 065-505 (tap 10)
Stem Length
20.03mm (from movement center to end of stem)
Stem Thread
0.9mm x 11.68mm
Hand Sizes 120mm/70mm/17 (small hands also 26mm)
Jewels 0
Functions Hours, minutes, central running seconds, small chronograph seconds at 6:00, 30 minute chrono counter at 10:00, 24 hour hand at 2:00, 4:00
Country of Manufacture Japan
Known Models
Vostok Europe N1 Rocket Chronograph (add yours to the comments below…)

The Miyota caliber JS06 is a quartz chronograph watch movement. It is made in Japan and has 0 jewels.

JS06 VS JS05:

Searching for JS06 leads to information on caliber JS05. Even using the search function on Miyota’s official site redirects JS06 to JS05 documentation. This is because the caliber JS06 is essentially the same as JS05, with the main difference being that it is the “high hand” version. According to the tech drawings, the JS06 hand stack sits higher than the JS05 (1.8mm/.45mm/.40mm vs 1.25mm/.45mm/.40mm for the central hands and 1.35mm vs .8mm for the small hands). This extended canon pinion allows for multi-layered or multi-leveled dial designs and the use of deeper inner bezels. For example, the movement shown above was found in a Vostok-Europe N1 Rocket Chrono watch, while it doesn’t have a multi-layer dial, it does have a rather thick crystal and a deep inner tachymeter bezel.

Accuracy Rating:

Miyota claims the accuracy of this movement to be +/-20 seconds/month when used under “normal” circumstances.

Battery Life:

According to Miyota, the correct SR621SW (364) battery cell should last about 2 years. This is based on using the chronograph for 30 minutes or less per day. It’s important to note that running the chronograph means the watch is working harder and this reduces the battery life. It’s advised to only use the chronograph when you need it. If you are not going to wear your watch for a while and want to save the battery, pulling out the stem (aka hacking the movement) will reduce the battery consumption.

Resetting the Chronograph Hand to Zero:

If your chronograph hand is not resetting to 12:00 or “zero” position, then you can try the following steps:

  1. Pull the crown to position 2 (time setting position).
  2. Press button A to advance the chronograph hand forward until it is lined up with 12:00. If you long-press A, the hand will move forward faster.
  3. Push the crown back to position 0

Note: You can only adjust the chronograph/stopwatch second hand since the chronograph minute hand (subdial at 10:00) is synchronized with the seconds. The subdial at 2:00 is the 24 hour hand and does not return to 12:00 unless it’s actually 12:00.

Replacement Prices:

The average individual movement replacement price at the time of this post was from $19.95 – $24.95.

Bulk Ordering

If you are a watch brand looking to order the Miyota JS06, the minimum required order is 1,000 pieces. This may be negotiable, but unless you are looking for a large production run, you may want to purchase the movements from a third party. Lead time for production from Miyota is approximately 2 months

Macro Gallery:

The Miyota JS60 found in a Vostok Europe N1 Chronograph watch:

Miyota Caliber Js06 Vostok N1 Rocket

Video:

Additional Resources:

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Matt
Matt
3 years ago

I have an N1 Rocket as mentioned in the known models list. I haven’t worn this watch for a long time so when I went to get it out of my drawer it wasn’t running. I changed the battery and only the main seconds hand is working. The chronograph hands are not working and I cannot even reset them using the resetting technique above. I don’t know why it would just stop working from not being used.

FRST
FRST
3 years ago
Reply to  Matt

My first reaction was to say reset the AC (all clear) on the movement by touching a wire to the battery and AC hole, but this Miyota doesn’t have one.

Matt
Matt
3 years ago
Reply to  calibercorner

As I said, I just replaced the battery, so it is already a new battery inside the watch. The hours, minutes, seconds are running fine. Only the chronograph isn’t running.

Matt
Matt
3 years ago
Reply to  calibercorner

Put a new battery in as instructed and it works! Thank you for the advice. My watch works! Saving this site for future reference. Thank you!

Jeannot Gernot
Jeannot Gernot
1 year ago
Reply to  calibercorner

Bien dit, @CC! Une autre solution serait de pousser les deux ‘pushers’ de même temps et voilà, la montre a ‘reset the chronograph’.

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