Ventus Watches

Mori 300m Brass Diver M-4


Ventus Watches

Mori 300m Brass Diver M-4


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In stock and ready to ship

Each watch comes with

-Canvas watch roll in simple wooden box

-Sailcloth style strap with brass buckle

-Tropic Style Rubber strap

-Horween Leather Strap

The Blue dial for this M-4 model is very subtle, for those looking for a brighter blue do consider the M-5

Mōri Motonari 

“The legend of the three arrows” is a story about Mōri Motonari. In an effort to get his sons to work together, he gave them each an arrow to break. This was done easily, and he challenged his sons to repeat it with three arrows bound together. This proved to be unbreakable.

Our Design Philosophy - Inspired by the past, built for the future

From the lesson of Mōri Motonari, we wanted to design an awesome diver's watch by focusing on 3 aspects. The 'Three Arrows' story is reflected on the dial, when the dive bezel triangle, dial triangle and Ventus logo line up. 

Aesthetic Design

The Ventus Mori was designed with the diving watches of the 1950s in mind.

A highly legible dial and an unimposing case gives it a rugged elegance. The Mori is a watch that fits under your shirt cuff, yet tough enough to be taken on a dive.

The case is also made from Brass, a material which patinas as you wear it. This makes each watch unique to its owner and every watch will have its own story to tell.

The dial is produced with a sandwich effect which gives a sense of depth to it. The dial design was kept clean and legible, with a date wheel printed in matching colors to the luminous paint.  

Mechanical craftsmanship

Even though the Mori looks like a watch from the 1950s, it has been designed with the latest advancements in technology. Its slim 12.5mm case (without crystal) is able to withstand a very respectable 300m of water pressure.

To commemorate its vintage roots, the caseback features a diving helmet design that has been stamped to give it an amazing 3D effect.

The double domed sapphire crystal ensures scratch resistance during dives. A 120 click unidirectional dive bezel keeps precise timing and the brightest C3 or BGW9 superluminova glows brightly in the murky depths.

Inside, a reliable Seiko NH35 automatic movement ensures that your watch will run for years without ever needing a battery.

Production Quality

Each watch is built to last and this will be achieved through precise production and careful assembly techniques. Having worked with our production partner on many projects, we are confident that quality will exceed expectations.


41mm Case Diameter. 14mm height (12.5 excl crystal)

48mm Lug to Lug length. 20mm lug width

300m Water Resistant

Double Domed Sapphire Crystal with inner AR coating

Seiko NH35 Automatic Movement

Brass Case with Stainless Steel caseback

Brass Bezel with optional Aluminium insert

Sandwich Dial

C3 or BGW9 Superluminova


Each watch comes with

-Canvas watch roll in simple wooden box

-Sailcloth style strap with brass buckle

-Tropic Style Rubber strap

-Vintage leather strap