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Casio PRG-270 manual and dimensions

Casio's operation guide for the Casio PRG-270 is the PDF for module 3415: Casio operation guide 3415 (PDF) ↗. The case is 52.4 mm wide, 54.6 mm long (case length L, not lug to lug), and 15 mm thick.

Sources checked · How we source numbers
Width (W)
52.4 mm1
Case length (L)
54.6 mm1
not lug to lug
Thickness
15 mm1
Lug width
not published by Casio
Casio PRG-270: size drawingCasio PRG-270, round case, top and side view to scale: case diameter 52.4 mm, case length (Casio L) 54.6 mm, lug width — (unknown), thickness 15 mm. Bezel, dial and crown size are schematic.lug width —Ø 52.4case length (Casio L) 54.6TOPthickness 15SIDE
Casio PRG-270, top and side, to scaleDrawing from data, not a photo · mm

Module 3415 twins

Casio's manual list puts 1 model codes on this module: same functions, same manual, often the same battery.

Codes of the Casio PRG-270 family[2]PRG-270

Module: Casio module 3415

The Casio PRG-270 runs on the Casio module 3415.

Battery

Casio PRG-270 specifications

Case width (W)
52.4 mm1
Lug to lug
not published by Casio; see case length (L)
Case length (L)
54.6 mm1Casio's L of L × W × H, measured differently from lug to lug; we never swap one for the other.
Thickness (H)
15 mm1
Lug width
not published by Casio
Weight
67 g1
Crystal
Mineral Glass1
Water resistance
100 m1
Module
casio/34152
Battery
Accuracy
±15 s/month1
Years made
start not published
Case code
not used by Casio: the module number (module 3415) identifies the watch

On your wrist

The verdict compares the case length (L) with the flat top of your wrist. Balanced from ~19.5 cm, past the edges below ~17 cm.

= 6.7 in

At the edge on a 17 cm wrist: the 54.6 mm case length (L) covers 100% of an estimated 54.8 mm flat top.

Casio publishes no lug-to-lug for this model, so the verdict uses its case length (L). The strap or bracelet joins inside that length, which makes this a cautious estimate.

Flat top = circumference ÷ 3.1, a community convention, not a measurement of your arm. Compact ≤ 0.75 of the flat top, balanced ≤ 0.89, at the edge ≤ 1. Compare more watches in the watch size calculator.

Casio PRG-270: wrist fitCasio PRG-270 on a wrist, top view to scale. case length (Casio L) 54.6 mm. Wrist 170 mm, estimated flat width 54.8 mm (circumference / 3.1). Ratio 1.00: at the edge.wrist, flat topwrist flat ≈ 54.8case length (Casio L) 54.6At the edge · 54.6 / 54.8 = 1.00estimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Casio PRG-270 on a 17 cm wristDrawing from data, not a photo · mm

Actual size on your screen

Calibrate once with a bank card and the drawing shows the Casio PRG-270 at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Casio PRG-270: size drawingCasio PRG-270, round case, top and side view to scale: case diameter 52.4 mm, case length (Casio L) 54.6 mm, lug width — (unknown), thickness 15 mm. Bezel, dial and crown size are schematic.lug width —Ø 52.4case length (Casio L) 54.6TOPthickness 15SIDE
Drawing from data, not a photo · mm
01020304050

Casio PRG-270 strap size

Casio publishes no lug width for the Casio PRG-270. Measure between the lugs with a caliper before buying a third-party strap.

Attachment: not published in our sources.

Find your strap length in the watch strap size tool, with the Casio PRG-270 filled in.

Same size as the Casio PRG-270

The models nearest to the Casio PRG-270 in case width and case length (L), drawn over it to scale; below, every model within 1 mm of its 54.6 mm.

Size comparison: Casio PRG-270, Casio AE-1500, Casio GW-9400, Casio GA-100Top-view outlines to scale on one centre. A Casio PRG-270: Ø 52.4, L 54.6, lug —, T 15. B Casio AE-1500: W 51.2, L 54.4, lug —, T 15.7 (vs A: W −1.2 L −0.2 T +0.7). C Casio GW-9400: W 53.5, L 55.2, lug —, T 18.2 (vs A: W +1.1 L +0.6 T +3.2). D Casio GA-100: W 51.2, L 55, lug —, T 16.9 (vs A: W −1.2 L +0.4 T +1.9).B W 51.2D W 51.2A Ø 52.4C W 53.5B L 54.4A L 54.6D L 55C L 55.2A Casio PRG-270Ø 52.4 · L 54.6 · lug — · T 15B Casio AE-1500W 51.2 · L 54.4 · lug — · T 15.7vs A: W −1.2 L −0.2 T +0.7C Casio GW-9400W 53.5 · L 55.2 · lug — · T 18.2vs A: W +1.1 L +0.6 T +3.2D Casio GA-100W 51.2 · L 55 · lug — · T 16.9vs A: W −1.2 L +0.4 T +1.9
A Casio PRG-270 and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ACasio PRG-270this watch
  2. BCasio AE-1500W −1.2 · L −0.2 · T +0.7 mm
  3. CCasio GW-9400W +1.1 · L +0.6 · T +3.2 mm
  4. DCasio GA-100W −1.2 · L +0.4 · T +1.9 mm

Differences against A in mm: W case width, L Casio case length, T thickness. Nearest by width and length together, from the published sizes.

Casio PRG-270 questions

Where is the manual for the Casio PRG-270?

The Casio PRG-270 runs Casio module 3415, and Casio publishes the operation guide for that module as a PDF: Casio operation guide 3415. The module number is stamped on the case back.

How big is the Casio PRG-270?

The Casio PRG-270 measures 52.4 mm wide, 54.6 mm long (Casio's L, not lug to lug), 15 mm thick, 67 g.

Will the Casio PRG-270 fit a 7.5-inch wrist?

Balanced: the Casio PRG-270's 54.6 mm case length (L) takes 89% of the ~61.5 mm flat top of a 7.5-inch (19.1 cm) wrist. By the same estimate (circumference ÷ 3.1) it sits balanced from about 19.5 cm and overhangs the flat top on wrists under about 17 cm.

What module is in the Casio PRG-270?

The Casio PRG-270 runs on the Casio module 3415. Casio's manual list puts 1 model codes on this module, 1 of them PRG-270 codes.

More Casio watches

Sources

Documents checked · Report a wrong number

  1. 1Casio America — PRG270-1 | Black Watch - PRO TREK | CASIO · html · read
  2. 2Casio Computer Co., Ltd. — Watch manual search JSON (US locale), manual_search.support.json · json · read