The Titanium Field Guide

Doxa SUB 300 Ti5

823.50.351.21

The Doxa SUB 300 Ti5 is a current-production diver watch with a Grade 5 titanium case. It is priced well above the $1,299 median for the category. The maker states no nickel-bearing steel at any skin-contact point, across the case, caseback and bracelet.

All Doxa watchesTitanium diver watchesGrade 5 titaniumOn a titanium bracelet
Price
$3,190
Titanium
Grade 5
Water resistance
300 m
Nickel-free
Yes
Verified nickel-free skin contactTitanium case, titanium caseback, titanium bracelet; no nickel-bearing steel at the skin, confirmed against the maker.Why this matters
Reference
823.50.351.21
Type
Diver
Case diameter
42.5 mm
Thickness
13.4 mm
Lug-to-lug
45 mm
Origin
Switzerland
Movement
Swiss automatic, self-winding, COSC certified chronometer
Power reserve
38 h
Complications
Date
Case shape
Round
Case colour
Natural / grey
Finish technology
Natural finish
Surface treatment
None
Caseback
Titanium
Bracelet / strap
Woven-texture Dive Flex rubber strap with a Grade 5 titanium pin buckle; no titanium bracelet offered
Titanium bracelet
Standard
Crystal
Sapphire (domed glass box, anti-reflective)
Display back
No
Dial
Professional (orange), Sharkhunter (black), Caribbean (blue), Redcoral (red), Whitepearl (white, fully coated in Super-LumiNova)
Dial colours
Black White Blue Orange Red
Lume
Super-LumiNova on all dive-related indications
Availability
Offered
Status
Current (permanent collection; seven references across five dials)
Not published
Weight, Caliber Help verify
High confidence Verified Sep 2026 Source: Doxa (maker product page) / Two Broke Watch Snobs Also sold as823.50.101.20823.50.201.32823.50.161.22823.50.161.20823.50.011.23823.50.011.20
Facts are free to cite with a link.
Reader reviews & photosContribute photo or review
No reviews yet. Be the first to write one.
See it in the interactive guideGet new-watch alertsContribute a photo or review

Browse all titanium watch comparisons →

Similar titanium watches

Nomadic Brú 750NomadicBrú 750$2,49542.0 mm13.5 mm thickDiversame category · same style · similar price · similar size
STILMegara Limited Edition (Titanium)$2,89442.0 mm13.4 mm thickDiversame category · same style · similar price · similar sizeSinn T50SinnT50$3,00041.0 mm12.3 mm thick53 gDiversame category · same style · similar price · similar sizeSinn T50 GBDRSinnT50 GBDR$3,90041.0 mm12.3 mm thickDiversame category · same style · similar price · similar sizeTutima M2 Seven Seas (Titanium)TutimaM2 Seven Seas (Titanium)$2,35044.0 mm13 mm thickDiversame category · same style · similar price · similar size
SinnT2 EZM 15 (Titanium)$3,12041.0 mm13.3 mm thick59 gDiversame category · same style · similar price · similar sizeMühle-Glashütte S.A.R. Mission-Timer TITANMühle-GlashütteS.A.R. Mission-Timer TITAN$3,38443.0 mm13 mm thickDiversame category · same style · similar price · similar sizeDelma Shell Star TitaniumDelmaShell Star Titanium$1,89041.0 mm13.6 mm thick136 gDiversame category · same style · similar price · similar size

Alternatives to the Doxa SUB 300 Ti5

Oris Aquis Date Titanium 43.5mmOrisAquis Date Titanium 43.5mm$2,80043.5 mm121 gDiversame category · same style · shared complications · similar priceSquale Master Titanium 120 ATMSqualeMaster Titanium 120 ATM$2,99541.6 mm16.15 mm thick131 gDiversame category · same style · shared complications · similar priceMTM XtremeMTMXtreme$3,02545.0 mm15 mm thickDiversame category · same style · shared complications · similar priceSinn T1 (EZM 14)SinnT1 (EZM 14)$3,10045.0 mm12.5 mm thick71 gDiversame category · same style · shared complications · similar priceTAG Heuer Aquaracer Professional 200 Solargraph (Titanium)TAG HeuerAquaracer Professional 200 Solargraph (Titanium)$3,60040.0 mm82 gDiversame category · same style · shared complications · similar price
RadoCaptain Cook Automatic 45mm Titanium$2,50045.0 mm14 mm thickDiversame category · same style · similar price · similar size

More titanium watches from Doxa

Doxa SUB 600T Pacific (titanium)DoxaSUB 600T Pacific (titanium)$1,99040.0 mmDiver

Frequently asked questions

Is the Doxa SUB 300 Ti5 nickel-free?

On the maker's published specification, no nickel-bearing steel touches the skin: a Grade 5 titanium case with a titanium caseback, plus a non-steel crown and strap. That is what the guide records rather than a test of the watch, so confirm the contact points with the maker before buying if you react to nickel.

What grade of titanium is the Doxa SUB 300 Ti5?

The Doxa SUB 300 Ti5 has a Grade 5 titanium case with a titanium caseback. This is confirmed against the maker spec.

What size is the Doxa SUB 300 Ti5?

It is 42.5 mm in diameter, 13.4 mm thick, 45 mm lug to lug, and water resistant to 300 m.

How much does the Doxa SUB 300 Ti5 cost, and is it available?

It is current-production and lists from $3,190.

All titanium Doxa watches · Titanium diver watches · All 1,384 watches

Learn: Titanium grades · Surface treatments · Why titanium scratches · How to read a spec

How we verify & grade · Image & Trademark Policy · Terms & Conditions