lug2lug
BrowseCompareNewsCommunityMy Watches
BrowseCompareNewsCommunityMy Watches
Theme
Popular microbrands:Christopher Ward·Baltic·anOrdain·Atelier Wen·Boldr·Bremont·Dan Henry·DOXABrowse all →
Best, by the specs:Diver under $2,000·Best dress watches·Chronograph under $5,000·Best sport watches·GMT under $5,000·Field under $500·Pilot under $2,000·Casual under $1,000All rankings →
Glossary:Lug-to-Lug·Water Resistance·Chronograph·GMT·Automatic·LumeBrowse all →
Tools:Collection tracker·Wrist-fit calculator·What should I buy?·Value retention rankings·Market index·iPhone app
Lug2Letter
Watches worth knowing about, weekly.
Curated discoveries, founder spotlights, and the occasional deep-dive.
Get the app
Download on theApp StoreGET IT ONGoogle Play
TermsPrivacyDelete accountCopyrightDisclosuresContactContribute

Independent reference site · not affiliated with any brand · contains affiliate links

© 2026 Lug2Lug LLC · Prices are estimates and not offers

Loading watch
Home/Browse/Swatch/Sistem Sea
SpecStudio
Swatch Sistem Sea
Click to inspect
Ask the communityStart a discussion about the Sistem Sea — get takes from other collectors.Ask →
Swatch · Sistem

Swatch Sistem Sea

Ref. SUTN403

$170Sold out
Find used on eBay

Some links here are affiliate links. lug2lug may earn a commission at no extra cost to you. Disclosures

Case

Diameter
42mm
Thickness
13.9mm
Lug-to-lug
50.6mm
Material
Polymer
Finish
Polymer
Water resistance
30m

Crystal & dial

Dial colour
Blue

Movement

Type
Automatic
Hacking
Yes
Hand-winding
Yes
Complications
Time only

Design language

Case shape
round
Dial style
standard
Bezel
smooth_polished
Bracelet
leather_strap

AI-detected from the product image

Sistem collection · 7 watches

Sistem Lake
Sistem Lake42mm
Sistem Meche
Sistem Meche42mm
Sistem Pilote
Sistem Pilote42mm
Sistem Rosee
Sistem Rosee42mm
Sistem Slate
Sistem Slate42mm
Sistem Snow
Sistem Snow42mm
Alternatives

02The connection engine

More like this.

Swatch Sistem Slate

Swatch

Sistem Slate

42mm · Automatic$250

Swatch Sistem Lake

Swatch

Sistem Lake

42mm · Automatic$230

Colomer & Sons Roma Tempus

Colomer & Sons

Roma Tempus

42mm · Automatic$302

Ferro & Company AGL 2 AUTOMATIC BLACK /

Ferro & Company

AGL 2 AUTOMATIC BLACK /

42mm · Automatic$745

Stewart Dawson 911

Stewart Dawson

911

42.5mm · Automatic$1,567

Direnzo Watches DRZ Type 250F

Direnzo Watches

DRZ Type 250F

40mm · Automatic

View all alternatives

03The community take

Owners talk.

“
In a nutshell

The Swatch Sistem Sea (ref. SUTN403) is an automatic watch, with a 42mm polymer case, 13.9mm thick. Water resistance is rated to 30m. Manufacturer MSRP is $170. The dial color is blue.

Open the discussion

On real wrists

No shots yet. Show how it wears.

04The paper trail

05The discussion

Talk about the Swatch Sistem Sea.