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Movement · Citizen · automatic

Citizen 8310 movement

Citizen 8310 is an automatic movement by Citizen: beating at 21,600 bph1, 60 h1 of power reserve.

Sources checked · How we source numbers

Citizen 8310 at a glance

Beat rate
21,600 bph1
Power reserve
60 h1
Accuracy
−20 to +40 s/day1
Do not set the date
21:00–04:301

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

Setting and servicing the Citizen 8310

The figures a watchmaker or a timegrapher needs for the Citizen 8310, as Citizen prints them.

Accuracy (maker)
−20 to +40 s/day1
Power reserve
60 h1
Do not set the date
21:00–04:301

All Citizen 8310 figures

Every figure we hold for the Citizen 8310, with its source. Where sources disagree, each value is shown.

Running

Type as printed
Mechanical watch1
Beat rate
21,600 bph1
Power reserve
60 h1
Hands and functions
hours, minutes, centre seconds, date, day1
Automatic winding
Yes1

Accuracy and care

Accuracy (maker)
−20 to +40 s/day1
Do not set the date
21:00–04:301

Not published yet

  • Diameter: not in the documents we read
  • Height: not published
  • Jewels: not published by Citizen
  • Lift angle: not published
  • Hacking seconds: not published
  • Hand holes: not published
  • Dial feet: not published
  • Stem part number: not published

Citizen 8310 questions

How accurate is the Citizen 8310?

Citizen rates the Citizen 8310 at −20 to +40 s/day, measured under Citizen’s own test conditions; a worn Citizen 8310 can run outside the −20 to +40 s/day range.

Source [1]

How long does the Citizen 8310 run when fully wound?

About 60 h from a full wind, per Citizen.

Source [1]

When should you not change the date on the Citizen 8310?

Not between 21:00 and 04:30, per Citizen: the Citizen 8310’s date change is engaged then, so move its hands past 04:30 before using the quick-set.

Source [1]

More on movements

Sources

Documents checked · Report a wrong number

  1. 1Citizen Watch Co. — Instruction manual, Cal. 41**/82**/83** · pdf · read