Skip to content
Audemars Piguet Selfwinding Chronograph "1017 ALYX 9SM"

Audemars Piguet Selfwinding Chronograph

AutomaticYellow Gold

Ref. 26238BA.OO.2000BA.01

Collection: Royal Oak OffshoreNickname: “1017 ALYX 9SM”Case size: 42mmMovement: 4404

Audemars Piguet Royal Oak Offshore Selfwinding Chronograph 26238BA.OO.2000BA.01 is a 42 mm case in 18-carat yellow gold. Case thickness comes to 15.3 mm. The dial is finished in gold and sits under a sapphire crystal. Inside is the self-winding calibre 4404, and this reference is a limited edition produced in collaboration with designer Matthew Williams. As a chronograph, it carries a flyback function along with small seconds and a date display. The watch is fitted on an 18-carat yellow gold bracelet with an AP folding clasp, with a black rubber strap supplied as an alternative. Water resistance is set at 100 metres.

Add to my inventory

Free account required - pre-fills all specs automatically

Last updated 11 Jul 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Men

CASE

Diameter

42mm

Thickness

15.3mm

Case Material

Yellow Gold

Water Resistance

100m

Crystal

Sapphire Crystal

Bezel Material

Yellow Gold

Case Shape

Octagonal

MOVEMENT

Movement Type

Automatic

Caliber

4404

Power Reserve

70h

Frequency

28,800 vph (4 Hz)

Jewels

40 jewels

DIAL

Dial Color

Gold

BRACELET/STRAP

Bracelet/Strap

Yellow Gold

Clasp Type

Fold Clasp

FEATURES & COMPLICATIONS

ChronographDateFlybackLimited EditionSmall seconds

More from Audemars Piguet

Show all →

Other watches with the 4404 calibre

Show all →

FOR WATCH DEALERS

Trading the Audemars Piguet Selfwinding Chronograph?

Clone any catalog watch into your stock, sync it to Chrono24 and eBay, and invoice it with your own tax settings.