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Citizen watch · Calendrier

Citizen BU0057 Calendrier

The Citizen BU0057 measures 44 mm across, with 23 mm lugs. The Citizen BU0057 runs on a rechargeable MT621 that the watch charges itself. A silver oxide SR621SW is the same size but must not be fitted in its place; check any swap in the battery swap checker.

Sources checked · How we source numbers
Case
44 mm2
Lug to lug
not published by Citizen
Thickness
not published by Citizen
Lug width
23 mm2
Citizen BU0057: size drawingCitizen BU0057, round case, top and side view to scale: case diameter 44 mm, lug to lug — (unknown), lug width 23 mm, thickness — (unknown). Bezel, dial and crown size are schematic.lug width 23Ø 44lug to lug —TOPthickness —
Citizen BU0057, top and side, to scaleDrawing from data, not a photo · mm

Citizen BU0057 specifications

Case diameter
44 mm2
Lug to lug
not published by Citizen
Thickness
not published by Citizen
Lug width
23 mm223 mm watches
Crystal
Spherical Mineral Crystal2
Water resistance
WR100/10Bar/333ft [Swimming, Showering & Snorkeling]2
Movement
citizen/87302
Battery
Years made
start not published
Case code
not in our data yet
Line
Calendrier2

On your wrist

No lug-to-lug or case length is published for the Citizen BU0057, so there is no fit verdict yet.

Actual size on your screen

Calibrate once with a bank card and the drawing shows the Citizen BU0057 at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Citizen BU0057: size drawingCitizen BU0057, round case, top and side view to scale: case diameter 44 mm, lug to lug — (unknown), lug width 23 mm, thickness — (unknown). Bezel, dial and crown size are schematic.lug width 23Ø 44lug to lug —TOPthickness —
Drawing from data, not a photo · mm
01020304050

Citizen BU0057 strap size

Lug width 23 mm2: a 23 mm strap with 23 mm spring bars fits between the lugs. 3 other models take 23 mm.

Attachment: not published in our sources.

Find your strap length in the watch strap size tool, with the Citizen BU0057 filled in.

On a bracelet? How to remove watch links to size it to your wrist.

23 mm strap: strap diagramTwo-piece strap laid flat (23 mm strap). Lug width 23 mm. Short piece — (unknown), long piece — (unknown). Buckle, keepers and holes are schematic.short —long —lug 23lug 23strap length —23 mm strap
23 mm at the lugs; lengths depend on your wristDrawing from data, not a photo · mm

Movement: Citizen 8730

The Citizen BU0057 runs on the Citizen 8730.

Battery

Citizen BU0057 questions

What battery does the Citizen BU0057 take?

The Citizen BU0057 takes MT621.

Can I fit a regular battery in the Citizen BU0057 instead of the MT621?

The Citizen BU0057 runs on a rechargeable MT621 that the watch charges itself. A silver oxide SR621SW is the same size but must not be fitted in its place; check any swap in the battery swap checker.

What movement is in the Citizen BU0057?

The Citizen BU0057 runs on the Citizen 8730.

What strap size does the Citizen BU0057 take?

The Citizen BU0057 measures 23 mm between the lugs, so it takes a 23 mm strap with 23 mm spring bars. 3 other models in our base share that width.

Find the strap length for your wrist and the Citizen BU0057 in the watch strap size tool.

More Citizen watches

Sources

Documents checked · Report a wrong number

  1. 1Citizen Watch US — Battery Information (model / caliber / battery table) · html · read
  2. 2Citizen Watch US — Calendrier Eco-Drive watch BU0057-54E · html · read