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 $1,300 median for the category.

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Price

$229.9

Titanium

Grade 5

Water resistance

200 m

Type

Diver

Case diameter

52.0 mm

Origin

China

Movement

Automatic

Caliber

Seiko NH35

Complications

Date

Case shape

Round

Case colour

Natural / grey

Finish technology

Natural finish

Caseback

Titanium

Nickel-free

Not verified (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, Surface treatment, Bracelet / strap, Titanium bracelet, Crystal, Lume Help verify

Medium confidence Verified Jul 2026 Source: RDUNAE R1 Titanium Tuna Maker / listing ↗

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