The Titanium Field Guide

RDUNAE R1 Titanium Emperor Tuna

The RDUNAE R1 Titanium Emperor Tuna is a current-production diver watch with a grade 5 titanium case. It is priced well under the $1,299 median for the category.

All RDUNAE watchesWatch diver watchesUnder $500MicrobrandGrade 5 titanium
Price
$229.9
Material
Titanium
Grade / type
Grade 5
Water resistance
200 m
Type
Diver
Case diameter
52.0 mm
Origin
China
Movement
Automatic
Caliber
Seiko NH35
Complications
Date
Colour
Grey
Finish technology
Natural finish
Caseback
Titanium
Nickel-free
Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
Display back
No
Dial
Black
Dial colours
Black
Availability
Offered
Status
Current
Not published
Reference, Thickness, Lug-to-lug, Weight, Power reserve, Hardness, Construction, Surface treatment, Bracelet / strap, Matching bracelet, Crystal, Lume
Medium confidence Verified Jul 2026 Source: RDUNAE R1 Titanium Tuna
Facts are free to cite with a link.
Reader reviews & photosContribute photo or review
See it in the interactive guideGet new-watch alertsContribute a photo or review

Browse all watch comparisons →

Similar watches

Aragon Divemaster Titanium NH35AragonDivemaster Titanium NH35$25050.0 mm13.6 mm thick119 gDiversame category · same style · similar price · similar sizeHeimdallr Titanium SKX DiverHeimdallrTitanium SKX Diver$17942.0 mmDiversame category · same style · similar price · same movementThorn 38mm Titanium 50-Fathoms DiverThorn38mm Titanium 50-Fathoms Diver$17938.0 mmDiversame category · same style · similar price · same movementThorn T007 38mm 50 Fathoms Smil-Spec DiveThornT007 38mm 50 Fathoms Smil-Spec Dive$17938.0 mm10 mm thickDiversame category · same style · similar price · same movementBerny Automatic Titanium Diver WatchBernyAutomatic Titanium Diver Watch$18441.5 mm12.7 mm thick115 gDiversame category · same style · similar price · same movementHeimdallr Titanium TunaHeimdallrTitanium Tuna$18947.0 mmDiversame category · same style · similar price · same movementHeimdallr Titanium Turtle 6105 DiverHeimdallrTitanium Turtle 6105 Diver$18913.4 mm thickDiversame category · same style · similar price · same movementTactical Frog Titanium FX-Diving V4Tactical FrogTitanium FX-Diving V4$18942.0 mm13.3 mm thickDiversame category · same style · similar price · same movement

Alternatives to the RDUNAE R1 Titanium Emperor Tuna

Thorn T011 Titanium VintageThornT011 Titanium Vintage$18941.0 mmDiversame category · same style · shared complications · similar priceThorn SHY036 39mm PT5000 TitaniumThornSHY036 39mm PT5000 Titanium$18939.0 mmDiversame category · same style · shared complications · similar priceWatchdives WD007 V4 Sea Ghost NTTD TitaniumWatchdivesWD007 V4 Sea Ghost NTTD Titanium$18942.0 mm12.2 mm thick54 gDiversame category · same style · shared complications · similar priceWatchdives WD50Ti Titanium 50-FathomsWatchdivesWD50Ti Titanium 50-Fathoms$19940.0 mm13.25 mm thickDiversame category · same style · shared complications · similar priceWatchdives WD007 Top Hat Sapphire TitaniumWatchdivesWD007 Top Hat Sapphire Titanium$19942.0 mmDiversame category · same style · shared complications · similar priceWatchdives WD007 39mm PT5000 Titanium NTTDWatchdivesWD007 39mm PT5000 Titanium NTTD$19939.0 mmDiversame category · same style · shared complications · similar price

More watches from RDUNAE

RDUNAE R1 Zaku Tuna-IIRDUNAER1 Zaku Tuna-II$209.9052.0 mmDiver

Frequently asked questions

What is the case material of the RDUNAE R1 Titanium Emperor Tuna?

The RDUNAE R1 Titanium Emperor Tuna has a grade 5 titanium case with a titanium caseback. It is recorded at medium confidence pending a maker-stated material.

What size is the RDUNAE R1 Titanium Emperor Tuna?

It is 52.0 mm in diameter, and water resistant to 200 m.

How much does the RDUNAE R1 Titanium Emperor Tuna cost, and is it available?

It is current-production and lists from $229.90.

All RDUNAE watches · Watch diver watches · All 1,600 watches

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

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

Report an error on this page · how corrections work