The Wristwatch Field Guide

Makoto Boken 300M Titanium

The Makoto Boken 300M Titanium is a current-production diver watch with a grade 5 titanium case. It is priced under the $1,199 median for the category. Nothing touching the skin is nickel-bearing steel, verified across the case, caseback and bracelet.

All Makoto watchesExotic-material diver watchesTitaniumDiversUnder $5,000
Price
$950
Material
Titanium
Grade / type
Grade 5
Water resistance
300 m
Type
Diver
Case diameter
40.0 mm
Thickness
11.5 mm
Lug-to-lug
47 mm
Origin
Canada
Movement
Automatic
Caliber
Miyota 90S5
Complications
Time only
Colour
Grey
Surface treatment
None
Caseback
Titanium
Nickel-free
Yes
Bracelet / strap
FKM rubber strap (titanium buckle)
Display back
No
Lume
Super-LumiNova BGW9
Availability
Offered
Status
Pre-order (ships Oct 2026)
Not published
Reference, Weight, Power reserve, Hardness, Construction, Matching bracelet, Crystal, Dial
High confidence Verified Aug 2026 Source: Makoto Spec checksGrade Jul 2026Price Jul 2026
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More exotic-material watches from Makoto

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Frequently asked questions

Is the Makoto Boken 300M Titanium nickel-free?

Yes. Nothing nickel-bearing touches the skin: a grade 5 titanium case with a titanium caseback, plus a non-steel crown and strap. The Wristwatch Field Guide marks it nickel-free for whole-watch skin contact. If your allergy is severe, confirm the contact points with the maker.

What is the case material of the Makoto Boken 300M Titanium?

The Makoto Boken 300M Titanium has a grade 5 titanium case with a titanium caseback. This is confirmed against the maker spec.

What size is the Makoto Boken 300M Titanium?

It is 40.0 mm in diameter, 11.5 mm thick, 47 mm lug to lug, and water resistant to 300 m.

How much does the Makoto Boken 300M Titanium cost, and is it available?

It is current-production and lists from $950.

All exotic-material Makoto watches · Exotic-material diver watches · All 1,957 watches

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