Skip to content
WatchtheDetails

Citizen watch · Blue Angels · solar quartz

Citizen AT8020 Blue Angels

The Citizen AT8020 measures 43 mm across, with 23 mm lugs. The Citizen AT8020 runs on a rechargeable CTL621F 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
43 mm2
Lug to lug
not published by Citizen
Thickness
not published by Citizen
Lug width
23 mm2
Citizen AT8020: size drawingCitizen AT8020, round case, top and side view to scale: case diameter 43 mm, lug to lug — (unknown), lug width 23 mm, thickness — (unknown). Bezel, dial and crown size are schematic.lug width 23Ø 43lug to lug —TOPthickness —
Citizen AT8020, top and side, to scaleDrawing from data, not a photo · mm

Movement: Citizen H800 (Eco-Drive, radio-controlled)

The Citizen AT8020 runs on the Citizen H800 (Eco-Drive, radio-controlled), a solar quartz movement. 2 other models in our base use it.

Battery life
10 months3
Accuracy
±15 s/month3

Battery

Citizen AT8020 specifications

Case diameter
43 mm2
Lug to lug
not published by Citizen
Thickness
not published by Citizen
Lug width
23 mm223 mm watches
Crystal
Anti-Reflective Sapphire Crystal2
Water resistance
WR200/20Bar/666ft [Swimming, Showering & Snorkeling]2
Movement
Citizen H800 (Eco-Drive, radio-controlled)2 · solar quartz
Battery
Years made
20172
Case code
not in our data yet
Line
Blue Angels2

On your wrist

No lug-to-lug or case length is published for the Citizen AT8020, so there is no fit verdict yet.

Actual size on your screen

Calibrate once with a bank card and the drawing shows the Citizen AT8020 at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Citizen AT8020: size drawingCitizen AT8020, round case, top and side view to scale: case diameter 43 mm, lug to lug — (unknown), lug width 23 mm, thickness — (unknown). Bezel, dial and crown size are schematic.lug width 23Ø 43lug to lug —TOPthickness —
Drawing from data, not a photo · mm
01020304050

Citizen AT8020 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 AT8020 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

Same size as the Citizen AT8020

Same movement: Citizen H800 (Eco-Drive, radio-controlled)

Citizen AT8020 questions

What battery does the Citizen AT8020 take?

The Citizen AT8020 takes CTL621F.

Can I fit a regular battery in the Citizen AT8020 instead of the CTL621F?

The Citizen AT8020 runs on a rechargeable CTL621F 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 AT8020?

The Citizen AT8020 runs on the Citizen H800 (Eco-Drive, radio-controlled), a solar quartz movement.

What strap size does the Citizen AT8020 take?

The Citizen AT8020 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 AT8020 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 — World Chronograph A-T - Men's Eco-Drive AT8020-03L Blue Watch · html · read
  3. 3Citizen Watch Co. — Instruction manual, H80* (radio-controlled Eco-Drive) · pdf · read