The Titanium Field Guide

Jacques Bianchi JB300 Indigo Maris

The Jacques Bianchi JB300 Indigo Maris is a 41.5 mm Grade 5 titanium dive watch with a SoProd P024 automatic movement.

All Jacques Bianchi watchesDiver watchesUnder $3,000MicrobrandGrade 5 titanium
Price
≈$1,572 (€1,395)
Material
Titanium
Grade / type
Grade 5
Water resistance
300 m
Type
Diver
Case diameter
41.5 mm
Thickness
13 mm
Origin
France
Movement
Automatic (Swiss)
Caliber
SoProd P024
Complications
Time only
Colour
Grey
Surface treatment
Brushed and polished
Finish technology
Natural finish
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Bracelet / strap
JBM technical textile strap plus a blue Tropic rubber strap (both supplied)
Crystal
Sapphire
Display back
No
Dial
Deep blue (Indigo Maris)
Dial colours
Blue
Lume
Super-LumiNova BGW9 (blue emission)
Availability
Offered
Status
Current (limited edition of 150; sold out at the maker, still listed)
Not published
Reference, Lug-to-lug, Weight, Power reserve, Hardness, Construction, Caseback, Matching bracelet
High confidence Verified Oct 2026 Source: Jacques Bianchi (maker product page)
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Frequently asked questions

What grade of titanium is the Jacques Bianchi JB300 Indigo Maris?

Grade 5, as stated by the maker.

What size is the Jacques Bianchi JB300 Indigo Maris?

The case is 41.5 mm across and 13 mm thick. It is water resistant to 300 m.

How much does the Jacques Bianchi JB300 Indigo Maris cost, and is it available?

It is in production, at a list price of $1,572.

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