MIYOTA/CITIZEN 0S25 Quartz Movement

Quantity	Discount (%)	Price
1 - 2	—	$16.00
3 - 4	5 %	$15.20
5 - 9	7 %	$14.88
10+	10 %	$14.40

Quantity

Discount (%)

Price

1 - 2

—

$16.00

3 - 4

5 %

$15.20

5 - 9

7 %

$14.88

10+

10 %

$14.40

Product Description

This is a genuine Japanese MIYOTA (Citizen Group) 0S25 quartz chronograph movement, measuring 13 1/2‴ (approx. 30.8mm) in diameter with a height of 5.10mm. It features high‑accuracy chronograph functions including 60‑minute, 60‑second, 1/20‑second counters and a 24‑hour sub‑dial, plus a date display. As a versatile multi‑function quartz movement, the 0S25 is widely used in mid‑to‑high‑end sports chronograph watches. It includes an original winding stem and is supplied in SOFLY anti‑static tray packaging.

Features & Function

Quantity	Discount (%)	Price
1 - 2	—	$16.00
3 - 4	5 %	$15.20
5 - 9	7 %	$14.88
10+	10 %	$14.40

Genuine OEM: Factory‑produced by MIYOTA Japan, brand new with reliable quality.

Dimensions: 13 1/2‴ (approx. 30.8mm) diameter, 5.10mm height – fits a wide range of sports watch cases.

Chronograph functions: Three sub‑dials – 60‑minute counter (10 o’clock), 60‑second counter (2 o‘clock), 24‑hour display (6 o’clock), plus a 1/20‑second chronograph (central seconds hand).

Date display: Date window at 3 o‘clock with quick‑set function.

Accuracy: ±20 seconds per month, meeting standard quartz movement precision.

Battery life: Approx. 2 years (uses SR927SW / 395 cell).

Included accessories: Original winding stem, SOFLY anti‑static tray packaging.

Origin: Made in Japan.

Maintenance & Service Guide

Battery replacement interval: Change the battery every 2‑3 years, even if the watch is still running, to prevent leakage.

Cleaning: Remove dust with a soft brush or air blower. Never wash the movement with solvents.

Coil protection: The coil is extremely delicate – avoid touching it with metal tools.

Stem lubrication: Apply a very small amount of low‑strength threadlocker (e.g., Loctite 222) to the crown‑stem threads to prevent loosening.

Storage: Store unused movements in the original SOFLY tray, away from moisture and static.

Calibration: Quartz movements are highly accurate; recalibration is rarely needed. If the rate is significantly off, replace the movement.

FAQ

Q1: How can I distinguish the 0S25 from other MIYOTA chronograph movements (e.g., 0S20)?
A: The 0S25 features a 1/20‑second chronograph (the central seconds hand moves in 1/20‑second increments). The 0S20 typically offers 1/10‑ or 1/5‑second precision. Sub‑dial layouts also differ; consult the official technical datasheet.

Q2: Is a 2‑year battery life normal?
A: Yes. Chronograph movements consume more power (especially when the chronograph is running). 2 years is the typical design life. If the chronograph is rarely used, battery life may be slightly longer.

Q3: How to align the chronograph hands to zero during installation?
A: Before installing hands, insert the battery and press the reset pusher (4 o’clock) to zero the chronograph seconds, minute counter, and 1/20‑second hand. With all hands at zero, press each hand onto its pinion pointing exactly at 12 o‘clock. If a hand is misaligned, repeat the reset procedure and reinstall.