Roger Dubuis Excalibur Spider Ultimate Carbon

The Roger Dubuis Excalibur Spider Ultimate Carbon is a 45 mm carbon watch with an RD508SQ hand-wound movement. At a list price of $600,000, no other carbon watch in production costs more, out of 93.

2 official photos · reader photos welcome

Price

$600,000

Material

Carbon

Grade / type

Multilayer carbon composite (100%)

Water resistance

50 m

Reference

RDDBEX0675

Type

Other

Case diameter

45.0 mm

Origin

Switzerland

Movement

Manual, skeleton flying tourbillon

Caliber

RD508SQ

Power reserve

60 h

Complications

Tourbillon, Power reserve

Colour

Black

Construction

Assembled

Finish technology

Natural finish

Caseback

Titanium (black DLC, open with sapphire crystal)

Nickel-free

Unconfirmed (bracelet, strap, or clasp hardware not confirmed)

Bracelet / strap

Carbon composite bracelet

Matching bracelet

Standard

Crystal

Sapphire

Display back

Yes

Dial

Openworked

Availability

Offered

Status

Current (limited)

Not published

Thickness, Lug-to-lug, Weight, Hardness, Surface treatment, Lume

Medium confidence Verified Sep 2026 Source: Roger Dubuis (maker) / Oracle of Time Spec checksComposite Jul 2026Price Jul 2026

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