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Audemars Piguet · Royal Oak

Audemars Piguet Royal Oak Selfwinding 41 mm

Reference 15500ST.OO.1220ST.01 · Tool · 41 mm

14Ø 41 mm
Illustration drawn from the specifications: case to scale, colours and style approximate. Not a photo. Photos on the official page

Specifications

Reference
15500ST.OO.1220ST.01
Family
Royal Oak
Category
Tool
Status
Current
Case material
Stainless steel
Case diameter
41 mm
Case thickness
10.5 mm Official
Lug-to-lug
—
Lug width
—
Water resistance
50 m
Bezel
—
Calibre
4302 Official
Power reserve
70 h
Frequency
28,800 vph (4 Hz)

Official product page · retrieved October 16, 2026

Does it fit your wrist?

Enter your wrist circumference. The watch appears to scale on the flat top of the wrist.

14No lug-to-lug dataFlat top of the wrist 54.1 mm
Top view on a wrist, to scale
Flat top of the wrist 54.1 mmNo lug-to-lug dataCase diameter 41 mm
Side view, across the wrist

No lug-to-lug figure exists for this reference yet, so fit cannot be computed.

Measurements and sources

Brands rarely publish thickness, lug width and lug-to-lug together. Each observation below is kept separate, with who gave it.

Case thickness

Value Type Source Date
10.5 mm Official Audemars Piguet October 16, 2026

Lug-to-lug

No source gave this figure yet.

Lug width

Lug width is the gap between the lugs, where the strap fits. It is not lug-to-lug.

No source gave this figure yet.

Calibre source

Official Audemars Piguet · retrieved October 16, 2026

Other versions in the same case

These references differ only by dial, bracelet or bezel colour. The brand gives them the same case dimensions, so the figures on this page apply to them too.

Other Royal Oak references

Watch Ø Thickness Lug-to-lug Calibre
Royal Oak Double Balance Wheel Openworked 41 mm (steel) 15407ST.OO.1220ST.01 41 mm 9.9 mm — 3132
Royal Oak Perpetual Calendar 41 mm (steel, calibre 7138) 26674ST.OO.1320ST.01 41 mm 9.5 mm — 7138
Royal Oak Selfwinding Flying Tourbillon 41 mm (steel, 10.6 mm thick) 26730ST.OO.1320ST.02 41 mm 10.6 mm — 2950
Royal Oak Selfwinding Flying Tourbillon 41 mm (titanium, 10.6 mm thick) 26730TI.OO.1320TI.02 41 mm 10.6 mm — 2950
Royal Oak Minute Repeater Supersonnerie 42 mm (ceramic) 26591CE.OO.D002CA.01 42 mm 14 mm — 2953
Royal Oak "Jumbo" Extra-Thin 16202ST.OO.1240ST.02 39 mm 8.1 mm — 7121
Royal Oak Selfwinding Flying Tourbillon Extra-Thin (RD#3) 39 mm 26670ST.OO.1240ST.02 39 mm 8.1 mm — 2968
Royal Oak Perpetual Calendar 41 mm (steel, calibre 5134) 26574ST.OO.1220ST.03Discontinued 41 mm 9.5 mm — 5134
Royal Oak Selfwinding "50th Anniversary" 41 mm 15510ST.OO.1320ST.01Discontinued 41 mm 10.5 mm — 4302
Royal Oak Selfwinding Flying Tourbillon "50th Anniversary" 41 mm (steel) 26730ST.OO.1320ST.01Discontinued 41 mm 10.6 mm — 2950
Royal Oak Selfwinding Flying Tourbillon 41 mm (steel, 10.7 mm thick) 26530ST.OO.1220ST.01Discontinued 41 mm 10.7 mm — 2950
Royal Oak Selfwinding Flying Tourbillon Openworked 26735ST.OO.1320ST.02Discontinued 41 mm 10.6 mm — 2972
Royal Oak Selfwinding Flying Tourbillon Openworked "50th Anniversary" 26735ST.OO.1320ST.01Discontinued 41 mm 10.6 mm — 2972
Royal Oak Selfwinding Perpetual Calendar 26684ST.OO.1356ST.01 38 mm 9.4 mm — 7136
Royal Oak Tourbillon Extra-Thin 26522ST.OO.1220ST.01Discontinued 41 mm 9 mm — 2924
Royal Oak Tourbillon Extra-Thin Openworked 26518ST.OO.1220ST.01Discontinued 41 mm 9 mm — 2924
Royal Oak Double Balance Wheel Openworked 41 mm (ceramic) 15416CE.OO.1225CE.01Discontinued 41 mm 9.7 mm — 3132
Royal Oak Perpetual Calendar 41 mm (titanium) 26574TI.OO.1220TI.01Discontinued 41 mm 9.5 mm — 5134
Royal Oak Perpetual Calendar Openworked 26585CE.OO.1225CE.01Discontinued 41 mm 9.9 mm — 5135
Royal Oak Perpetual Calendar Ultra-Thin 26586TI.OO.1240TI.01Discontinued 41 mm 6.2 mm — 5133
Royal Oak Selfwinding Flying Tourbillon "50th Anniversary" 41 mm (titanium) 26730TI.OO.1320TI.01Discontinued 41 mm 10.6 mm — 2950
Royal Oak Selfwinding Flying Tourbillon 41 mm (titanium, 10.7 mm thick) 26530TI.OO.1220TI.01Discontinued 41 mm 10.7 mm — 2950
Royal Oak Selfwinding 37 mm (calibre 5900) 15550ST.OO.1356ST.06 37 mm 9.1 mm — 5900
Royal Oak Selfwinding Flying Tourbillon Extra-Thin (RD#3) 37 mm 26660ST.OO.1356ST.02 37 mm 8.1 mm — 2968
Royal Oak Minute Repeater Supersonnerie 42 mm (titanium) 26591TI.OO.1252TI.03Discontinued 42 mm 14 mm — 2953
Royal Oak “Jumbo” Extra-Thin 15202ST.OO.1240ST.01.ADiscontinued 39 mm 8.1 mm — 2121
Royal Oak "Jumbo" Extra-Thin "50th Anniversary" 16202ST.OO.1240ST.01Discontinued 39 mm 8.1 mm — 7121
Royal Oak "Jumbo" Extra-Thin Openworked "50th Anniversary" 16204ST.OO.1240ST.01Discontinued 39 mm 8.1 mm — 7124
Royal Oak Selfwinding Flying Tourbillon Extra-Thin (RD#3) "50th Anniversary" 39 mm 26670ST.OO.1240ST.01Discontinued 39 mm 8.1 mm — 2968
Royal Oak Quartz 67650ST.OO.1261ST.01 33 mm 7 mm — 2713
Royal Oak Selfwinding 34 mm (steel) 77350ST.OO.1261ST.01 34 mm 8.8 mm — 5800
Royal Oak Selfwinding 34 mm (ceramic) 77350CE.OO.1266CE.01 34 mm 8.8 mm — 5800
Royal Oak Selfwinding "50th Anniversary" 37 mm 15550ST.OO.1356ST.01Discontinued 37 mm 9.1 mm — 5900
Royal Oak Selfwinding 37 mm (calibre 3120) 15450ST.OO.1256ST.01.ADiscontinued 37 mm 9.8 mm — 3120
Royal Oak Selfwinding Flying Tourbillon Extra-Thin (RD#3) "50th Anniversary" 37 mm 26660ST.OO.1356ST.01Discontinued 37 mm 8.1 mm — 2968
Royal Oak Selfwinding "50th Anniversary" 34 mm (steel) 77450ST.OO.1361ST.01Discontinued 34 mm 8.8 mm — 5800
Royal Oak Selfwinding Chronograph 41 mm (steel, calibre 4401) 26240ST.OO.1320ST.05 41 mm 12.4 mm — 4401
Royal Oak Selfwinding "50th Anniversary" 34 mm (ceramic) 77350CE.OO.1266CE.01.ADiscontinued 34 mm 8.8 mm — 5800
Royal Oak Selfwinding Chronograph 41 mm (ceramic) 26240CE.OO.1225CE.02 41 mm 12.4 mm — 4401
Royal Oak Selfwinding Chronograph "50th Anniversary" 41 mm (steel) 26240ST.OO.1320ST.01Discontinued 41 mm 12.4 mm — 4401
Royal Oak Selfwinding Chronograph 38 mm (calibre 2385) 26315ST.OO.1256ST.01 38 mm 11 mm — 2385
Royal Oak Selfwinding Chronograph 38 mm (calibre 6401) 26450ST.OO.1356ST.01-B 38 mm 11.1 mm — 6401
Royal Oak Selfwinding Chronograph 41 mm (steel, calibre 2385) 26331ST.OO.1220ST.01Discontinued 41 mm 11 mm — 2385
Royal Oak Grande Complication 44 mm (ceramic) 26605CE.OO.1248CE.01 44 mm 15.1 mm — 2885
Royal Oak Selfwinding Chronograph "50th Anniversary" 41 mm (ceramic) 26240CE.OO.1225CE.01Discontinued 41 mm 12.4 mm — 4401
Royal Oak Selfwinding Chronograph "One Drop" 26240CE.OO.1225CE.98Discontinued 41 mm 12.4 mm — 4401
Royal Oak Grande Complication 44 mm (steel) 26341ST.OO.1105ST.01Discontinued 44 mm 15 mm — 2885

Other Audemars Piguet models

Watch Ø Thickness Lug-to-lug Calibre
Royal Oak Offshore Selfwinding - Music Edition 37 mm (ceramic) 77600CE.OO.A002CA.01 37 mm 12.1 mm — 5909
Royal Oak Concept Tourbillon "Companion" 26656TI.GG.D019VE.01Discontinued 43 mm 17.4 mm — 2979
Royal Oak Offshore Selfwinding - Music Edition 43 mm (ceramic) 15600CE.OO.A002CA.01Discontinued 43 mm 14.4 mm — 4309
Royal Oak Offshore Selfwinding - Music Edition 43 mm (titanium) 15600TI.OO.A343CA.01Discontinued 43 mm 14.4 mm — 4309
Royal Oak Concept Flying Tourbillon 26643TI.OO.D002CA.01Discontinued 38.5 mm 11.4 mm — 2982
Royal Oak Offshore Selfwinding - Music Edition 37 mm (titanium) 77600TI.OO.A343CA.01Discontinued 37 mm 12.1 mm — 5909
Show 23 more
Watch Ø Thickness Lug-to-lug Calibre
Royal Oak Offshore Diver 42 mm (calibre 4308) 15720ST.OO.A009CA.01 42 mm 14.2 mm — 4308
Code 11.59 Selfwinding Chronograph 26393ST.OO.A009KB.01 41 mm 12.6 mm — 4401
Royal Oak Offshore Selfwinding Chronograph 42 mm (steel, calibre 4404) 26238ST.OO.2000ST.01 42 mm 15.3 mm — 4404
Royal Oak Offshore Selfwinding Chronograph 42 mm (ceramic) 26238CE.OO.1300CE.01 42 mm 15.3 mm — 4404
Royal Oak Offshore Selfwinding Chronograph 42 mm (titanium) 26238TI.OO.2000TI.01 42 mm 15.3 mm — 4404
Royal Oak Offshore Selfwinding Chronograph 43 mm (steel) 26420ST.OO.A828CR.01 43 mm 14.4 mm — 4401
Royal Oak Offshore Diver 42 mm (calibre 3120) 15710ST.OO.A002CA.01Discontinued 42 mm 14.1 mm — 3120
Royal Oak Offshore Selfwinding Chronograph 43 mm (ceramic) 26420CE.OO.A005VE.01 43 mm 14.4 mm — 4401
Royal Oak Offshore Selfwinding Flying Tourbillon Chronograph 43 mm (ceramic) 26622CE.OO.D002CA.03 43 mm 15.5 mm — 2967
Code 11.59 Selfwinding 15210ST.OO.A009KB.01 41 mm 10.7 mm — 4302
Royal Oak Offshore Selfwinding Chronograph 42 mm (steel, calibre 3126) 26237ST.OO.1000ST.01.ADiscontinued 42 mm 14.4 mm — 3126
Royal Oak Offshore Selfwinding Chronograph 37 mm 26430TI.OO.A358CA.01-B 37 mm 11.5 mm — 6401
Royal Oak Concept Split-Seconds Chronograph GMT Large Date 26650TI.OO.D013CA.01Discontinued 43 mm 17.4 mm — 4407
Royal Oak Offshore Selfwinding Chronograph 43 mm (titanium) 26420TI.OO.A027CA.01Discontinued 43 mm 14.4 mm — 4401
Royal Oak Offshore Selfwinding Flying Tourbillon Chronograph 43 mm (titanium) 26622TI.GG.D002CA.01Discontinued 43 mm 15.5 mm — 2967
Royal Oak Offshore Selfwinding Tourbillon Chronograph 26622CE.OO.D002CA.01Discontinued 43 mm 15.5 mm — 2967
Royal Oak Concept Supersonnerie (RD#1) 26577TI.OO.D002CA.01Discontinued 44 mm 16.5 mm — 2937
Royal Oak Concept Tourbillon Chronograph Openworked Selfwinding 26587TI.OO.D010CA.01Discontinued 44 mm 16.2 mm — 2949
Royal Oak Offshore Chronograph 26405CE.OO.A002CA.01.ADiscontinued 44 mm 14.5 mm — 3126
Royal Oak Offshore Grande Complication 26582CE.OO.A002CA.01Discontinued 44 mm 15.5 mm — 2885
Royal Oak Offshore Selfwinding Chronograph 44 mm 26405CE.OO.A030CA.01.ADiscontinued 44 mm 14.5 mm — 3126
Royal Oak Offshore Selfwinding Chronograph Gims 26405CE.OO.A002CA.99.99Discontinued 44 mm 13.4 mm — 3126
Royal Oak Offshore Tourbillon Chronograph 26407TI.GG.A002CA.01Discontinued 44 mm 14.5 mm — 2943

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