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·Dress under $5,000·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·Selling calculator·What should I buy?·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/STEELDIVE/SD1906T
SpecStudio
STEELDIVE SD1906T
Click to inspect
STEELDIVE

STEELDIVE SD1906T

Ref. SD1906T

$108Stock unknown

Case

Diameter
39mm
Thickness
12.5mm
Lug-to-lug
49mm
Material
Ceramic
Water resistance
200m

Crystal & dial

Crystal
Sapphire

Movement

Caliber
Seiko NH35
Type
Automatic

Seiko

Seiko's third-party supply version of the 4R35, sold to external watch brands and modders worldwide. Adds hacking and hand-winding over the 7S26 it effectively replaced. The NH35 has become the default automatic movement for watch modding and microbrand watches, thanks to its low cost, reliability, and wide availability of compatible parts including dials, hands, and cases in the Seiko-compatible format.

Design language

Case shape
round
Dial style
standard
Bezel
fluted
Bracelet
metal_oyster

AI-detected from the product image

Alternatives

01The market

Market prices.

Retail$108

No forum listings recorded for this watch yet.

02The connection engine

More like this.

Zelos Swordfish 40mm SS MOP

Zelos

Swordfish 40mm SS MOP

40mm · Automatic$429

Zelos Swordfish 3

Zelos

Swordfish 3

40mm · Automatic$399

Zelos Swordfish 40mm SS (Ceramic Case)

Zelos

Swordfish 40mm SS (Ceramic Case)

40mm · Automatic$449

Phoibos Voyager

Phoibos

Voyager

39mm · Automatic$299

Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311

Islander

Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311

40mm · Automatic$399

Out of Order Casanova

Out of Order

Casanova

38mm · Automatic$715

View all alternatives

03The community take

Owners talk.

“
In a nutshell

The STEELDIVE SD1906T (ref. SD1906T) is an automatic watch, with a 39mm ceramic case, 12.5mm thick, powered by the Seiko NH35 movement. Water resistance is rated to 200m, under a sapphire crystal. Manufacturer MSRP is $108.

Open the discussion

On real wrists

No shots yet. Show how it wears.

04The paper trail

Ask the communityStart a discussion about the SD1906T: get takes from other collectors.Ask →

05The discussion

Talk about the STEELDIVE SD1906T.