The Wristwatch Field Guide

Synchron Ti300M Poseidon

The Synchron Ti300M Poseidon is a current-production diver watch with a grey grade 5 case, finished with brushed. It measures 41.0 mm across, 11.9 mm thick, 45 mm lug to lug, 50 g, and is water resistant to 300 m. Inside is the La Joux-Perret G100 (Soigne) automatic movement, with 68 h power reserve. Complications: Date. Priced from $1,290 (limited to 500). Brand origin: Switzerland.

Titanium and ceramic diver watchesTitaniumDiversUnder $5,000
Reference
–
Type
Diver
Price
$1,290 · limited to 500
Case diameter
41.0 mm
Thickness
11.9 mm
Lug-to-lug
45 mm
Water resistance
300 m
Weight
50 g
Origin
Switzerland
Movement
Automatic
Caliber
La Joux-Perret G100 (Soigne)
Power reserve
68 h
Complications
Date
Material
Titanium
Grade / type
Grade 5
Colour
Grey
Hardness
–
Construction
–
Surface treatment
Brushed
Caseback
–
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Tropic rubber strap
Matching bracelet
–
Crystal
Sapphire
Display back
No
Dial
Sunshine yellow
Lume
Super-LumiNova X1
Availability
Offered
Status
Current (limited to 500)
High confidence Verified Jun 2026 Source: Two Broke Watch Snobs Maker / listing ↗
Facts are free to cite with a link.
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Alternatives to the Synchron Ti300M Poseidon

CertinaDS Action Diver 40.5mm Titanium$1,06040.5 mm14.1 mm thick124 gDiversame category · same style · shared complications · similar price
CertinaDS Action Diver 38mm Titanium$1,10038.0 mm13.2 mm thick86 gDiversame category · same style · shared complications · similar price
CitizenPromaster Fujitsubo Platinum DLC (Super Titanium)$1,19541.0 mm119 gDiversame category · same style · shared complications · similar priceOceaneva Deep Marine Explorer II 1250M TitaniumOceanevaDeep Marine Explorer II 1250M Titanium$1,19942.0 mm14.8 mm thickDiversame category · same style · shared complications · similar price
SeikoProspex Shogun Titanium (SPB191)$1,20043.5 mm13.3 mm thick99 gDiversame category · same style · shared complications · similar price
AndersmannClassic 300M (Titanium DLC)$1,28044.0 mm12.4 mm thick117 gDiversame category · same style · shared complications · similar price

More titanium and ceramic watches from Synchron

Synchron Ti300M Sealab (Limited Edition)SynchronTi300M Sealab (Limited Edition)$1,39041.0 mm11.9 mm thick50 gDiver

Frequently asked questions

What is the case material of the Synchron Ti300M Poseidon?

The Synchron Ti300M Poseidon has a grey grade 5 case. This is confirmed against the maker spec.

What size is the Synchron Ti300M Poseidon?

It is 41.0 mm in diameter, 11.9 mm thick, 45 mm lug to lug, and water resistant to 300 m.

How much does the Synchron Ti300M Poseidon weigh?

About 50 g.

How much does the Synchron Ti300M Poseidon cost, and is it available?

It is current-production and lists from $1,290.

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