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Movement · Miyota (Citizen) · automatic

Miyota 90S5 movement

Miyota 90S5 is an automatic movement by Miyota (Citizen): 11½‴1 in size, 3.9 mm1 high, 241 jewels, beating at 28,800 bph1, 42 h1 of power reserve.

Sources checked · How we source numbers
Miyota 90S5: movement drawingMiyota 90S5, dial side, to scale: movement diameter — (unknown); size 11½‴; height 3.9 mm; hour, minute, second hand hole Ø — (unknown).movement Ø —11½‴ as printed3.9SIDE · SECTION · height 3.9Ahour, minute, second hand hole Ø —DETAIL A · 10:1
Miyota 90S5, dial sideDrawing from data, not a photo · mm

Miyota 90S5 at a glance

Diameter
11½‴1
Height
3.9 mm1
Jewels
241
Beat rate
28,800 bph1
Power reserve
42 h1
Accuracy
−10 to +30 s/day1
Lift angle
51°3

New to the terms? Read quartz vs automatic or watch movement types.

Setting and servicing the Miyota 90S5

The figures a watchmaker or a timegrapher needs for the Miyota 90S5, as Miyota prints them.

Lift angle
51°3
Accuracy (maker)
−10 to +30 s/day1
Positional difference
30 s/day1
Power reserve
42 h1
Hacking seconds
Yes1
Hand winding
Yes1
Crown turns to full wind
403

What fits the Miyota 90S5

The figures a dial, hands or case must match for the Miyota 90S5, as Miyota prints them.

Stem part number
065-A053

Same family at Miyota

How each differs from the Miyota 90S5, worked out from the figures on its own page.

All Miyota 90S5 figures

Every figure we hold for the Miyota 90S5, with its source. Where sources disagree, each value is shown.

Size

Size in lignes
11½‴1
Height
3.9 mm1

Running

Jewels
241
Beat rate
28,800 bph1
Power reserve
42 h1
Hands and functions
hours, minutes, centre seconds1
Hacking seconds
Yes1
Hand winding
Yes1
Crown turns to full wind
403

Accuracy and care

Accuracy (maker)
−10 to +30 s/day1
Positional difference
30 s/day1
Lift angle
51°3

Fitting: dial, hands, stem

Stem part number
065-A053
Movement holder part
500-0023
Dial screw part
929-8083

Not published yet

  • Hand holes: only in Miyota’s drawing; not read yet
  • Dial feet: not in the documents we read
  • Do not set the date: not in the documents we read

Miyota 90S5 questions

What is the lift angle of the Miyota 90S5?

51°, as Miyota prints it. Enter 51° on a timegrapher to read amplitude correctly for the Miyota 90S5.

Source [3]

How accurate is the Miyota 90S5?

Miyota rates the Miyota 90S5 at −10 to +30 s/day, measured under Miyota’s own test conditions; a worn Miyota 90S5 can run outside the −10 to +30 s/day range.

Source [1]

How long does the Miyota 90S5 run when fully wound?

About 42 h from a full wind, per Miyota; a full hand wind takes about 40 crown turns.

Source [1][2][3]

Does the Miyota 90S5 hack and hand-wind?

Yes, it hacks: the seconds hand stops with the crown pulled out. It can be wound by the crown.

Source [1]

More on movements

Sources

Documents checked · Report a wrong number

  1. 1Citizen Watch Co., Ltd. (MIYOTA) — MIYOTA movement 90S5 product page · html · read
  2. 2Citizen Watch Co., Ltd. (MIYOTA) — MIYOTA movement overview (catalogue table, 2 pages) · pdf · read
  3. 3Citizen Watch Co., Ltd. (MIYOTA) — Spec. sheet (90S5) · pdf · read