The Sensei Ten · Lightweight watches

10 lightweight watches, ranked by published weight

Titanium, slim profiles and watches that travel light. Ten designs that make a little less weight feel like a lot more freedom.

By Watch Sensei Editorial · Updated 2026-10-25

Start with these three

Find your starting point.

21g: the minimum here

Casio F-91W-1

The F-91W is the lightest complete watch in this selection at Casio’s 21g. Its stopwatch and alarm give those grams useful jobs.

USD 29.95

37g: practical digital simplicity

Casio W-800H-1AV

W-800H adds dual time and a 100m maker rating while remaining below 40g. It takes second place because this list is ordered by complete-watch mass.

AUD 99.95

39g: more functions for little mass

Casio AE-1200WH-1AV

World time, countdown and multiple alarms make the AE-1200 the function-heavy option among the light resin models. Casio lists 39g with its resin band.

USD 39.95

1. 01

   21g: the minimum here

   USD 29.95

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   Casio

   Casio F-91W-1

   The F-91W is the lightest complete watch in this selection at Casio’s 21g. Its stopwatch and alarm give those grams useful jobs.

   Case

   35.2 × 38.2 mm

   Thickness

   8.5 mm

   Listed weight

   21 g

   Movement

   Digital quartz

   Weight basis: Resin band

   Check Casio F-91W-1 listing ↗ · About Casio · Get the Sensei take

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2. 02

   37g: practical digital simplicity

   AUD 99.95

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   Casio

   Casio W-800H-1AV

   W-800H adds dual time and a 100m maker rating while remaining below 40g. It takes second place because this list is ordered by complete-watch mass.

   Case

   36.8 × 44.2 mm

   Thickness

   13.4 mm

   Listed weight

   37 g

   Maker rating

   100 m

   Movement

   Digital quartz

   Weight basis: Resin band

   Check Casio W-800H-1AV listing ↗ · About Casio · Get the Sensei take

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3. 03

   39g: more functions for little mass

   USD 39.95

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   Casio

   Casio AE-1200WH-1AV

   World time, countdown and multiple alarms make the AE-1200 the function-heavy option among the light resin models. Casio lists 39g with its resin band.

   Case

   42.1 × 45 mm

   Thickness

   12.5 mm

   Listed weight

   39 g

   Maker rating

   100 m

   Movement

   Digital quartz

   Weight basis: Resin band

   Check Casio AE-1200WH-1AV listing ↗ · About Casio · Get the Sensei take

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4. 04

   51g: a different construction brief

   USD 110.00

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   Casio

   Casio G-SHOCK GA-2100-1A1

   GA-2100 adds manufacturer-specified shock resistance in a 51g analogue-digital package. It is the most substantial-looking Casio here without a steel-bracelet mass penalty.

   Case

   45.4 × 48.5 mm

   Thickness

   11.8 mm

   Listed weight

   51 g

   Maker rating

   200 m

   Movement

   Analogue-digital quartz

   Weight basis: Resin band

   Check Casio G-SHOCK GA-2100-1A1 listing ↗ · About Casio · Get the Sensei take

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5. 05

   60g: titanium on rubber

   USD 399.00

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   RZE

   RZE Valour 38 - Slate Grey

   Valour 38’s specification table lists 60g with the rubber strap. That places a mechanical titanium watch between the resin digitals and the heavier bracelet options.

   Diameter

   38 mm

   Lug span

   45 mm

   Thickness

   11 mm

   Listed weight

   60 g

   Maker rating

   100 m

   Movement

   SII NH35A

   Weight basis: Rubber strap, specification table. Narrative also says 57g; unresolved discrepancy

   Check RZE Valour 38 - Slate Grey listing ↗ · About RZE · Get the Sensei take

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6. 06

   63g: a slim steel rectangle

   USD 292.00

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   Seiko

   Seiko Women's Rectangular Case Dress Watch #SWR091

   The retailer lists SWR091 at 63g on its steel bracelet. Its 22.7mm width and 7.2mm height explain why a steel watch can remain relatively light.

   Case width

   22.7 mm

   Lug span

   33.1 mm

   Thickness

   7.2 mm

   Listed weight

   63 g

   Movement

   Seiko 4N30

   Weight basis: Steel bracelet; retailer published weight

   Check Seiko Women's Rectangular Case Dress Watch #SWR091 listing ↗ · About Seiko · Get the Sensei take

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7. 07

   63g: steel on a strap

   USD 3,250.00

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   Weiss Watch Company

   Weiss Watch Company 38mm Automatic Standard Issue Field Watch with Date - Black / Olive

   Weiss publishes 63g with the strap for its 38mm Automatic Date. It ties the Seiko’s mass while offering a very different round mechanical watch.

   Diameter

   38 mm

   Lug span

   46.2 mm

   Thickness

   10.7 mm

   Listed weight

   63 g

   Maker rating

   100 m

   Movement

   Weiss Caliber 2130 (2892A2 base)

   Weight basis: Supplied strap

   Check Weiss Watch Company 38mm Automatic Standard Issue Field Watch with Date - Black / Olive listing ↗ · About Weiss Watch Company · Get the Sensei take

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8. 08

   85g: a decorative rectangle

   USD 180.00

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   Bersigar Watches

   Bersigar Watches Bersigar 1737 For Women · BG1737GR

   Bersigar lists 85g for the steel-bracelet 1737. That earns a place as a dress-oriented alternative within this under-100g selection.

   Case

   22 × 36 mm

   Thickness

   7.7 mm

   Listed weight

   85 g

   Maker rating

   100 m

   Movement

   Ronda 762

   Weight basis: Steel bracelet

   Check Bersigar Watches Bersigar 1737 For Women · BG1737GR listing ↗ · About Bersigar Watches · Get the Sensei take

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9. 09

   90g: count the bracelet

   USD 689.00

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   RZE

   RZE Resolute 36 - Halcyon

   Resolute 36 is listed at 36g without its bracelet and 90g with it. This article uses the complete 90g configuration, keeping the comparison honest.

   Diameter

   36 mm

   Lug span

   42.3 mm

   Thickness

   9.5 mm

   Listed weight

   90 g

   Maker rating

   100 m

   Movement

   Miyota 9039

   Weight basis: Titanium bracelet; watch head separately listed at 36g

   Check RZE Resolute 36 - Halcyon listing ↗ · About RZE · Get the Sensei take

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10. 10

    93.4g: steel and a NATO

    USD 298.00

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    MINUS-8

    MINUS-8 Field 1S

    MINUS-8 lists 93.4g alongside its supplied NATO configuration. It closes the list as a useful contrast to the assumption that only resin or titanium qualifies.

    Diameter

    39 mm

    Lug span

    52 mm

    Thickness

    12.5 mm

    Listed weight

    93.4 g

    Maker rating

    200 m

    Movement

    TMI NH35

    Weight basis: Maker lists 93.4g for the supplied NATO configuration; head-only basis not separately stated

    Check MINUS-8 Field 1S listing ↗ · About MINUS-8 · Get the Sensei take

    Back to the ten watches ↑

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