Casio F-91W-1YER vs Benyar BY-5140: which one suits you?

The two differ in 4 of the specs we have recorded, and the Casio F-91W-1YER is cheaper by SAR 65 (prices checked 10 Nov 2026).

Which one should you choose?

  • Paying less: cheaper by SAR 65
  • Higher water resistance: 30 m vs 10 m

The deciding difference here: water resistance and price.

Compares recorded specs; a missing spec does not mean the feature is absent.

Key differences

  • Display type

    DigitalAnalog
  • Case diameter

    35 mm45 mm
  • Case shape

    RectangularRound

Specifications side by side

14 of 14 specs

Scroll the table sideways to see the rest.

Spec
CasioSAR 55
Casio F-91W-1YER specs
BenyarSAR 120
Benyar BY-5140 specs
Reference priceSAR 55SAR 120
Display typeDigitalAnalog
Case material—Stainless steel
Water resistance10 m✓ 30 m
Glass—Hardlex
MovementQuartzQuartz

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Similar comparisons

Direct comparison questions

What is the difference in movement between the Casio F-91W-1YER and the Benyar BY-5140?

No difference here: movement is Quartz on both.

What is the difference in case diameter between the Casio F-91W-1YER and the Benyar BY-5140?

Casio F-91W-1YER: 35 mm; Benyar BY-5140: 45 mm. A higher value is not necessarily better for you.

What is the difference in water resistance between the Casio F-91W-1YER and the Benyar BY-5140?

Water resistance is higher on the Benyar BY-5140: 30 m vs 10 m on the Casio F-91W-1YER. If this spec is your priority, the difference favours it.

What is the difference in display type between the Casio F-91W-1YER and the Benyar BY-5140?

Casio F-91W-1YER: Digital; Benyar BY-5140: Analog. This is a spec difference, not a verdict that one is better overall.