![Lucius Atelier Seikonaut Watch Case - 38mm [ULTRA THIN EDITION] — Case](https://assets.assemble.watch/parts/cases/lucius_atelier/lucius_atelier_seikonaut_watch_case_38mm_ultra_thin_edition.webp)
Case reference
Seikonaut Watch Case - 38mm [ULTRA THIN EDITION]
Made by Lucius Atelier. Bracelet: confirmed fit with 8 bracelets; probable cross-vendor fit with 53 more. Strap: confirmed fit with 17 straps; probable cross-vendor fit with 20 more. Chapter Ring: confirmed fit with 47 chapter rings; probable cross-vendor fit with 118 more. Crown: probable cross-vendor fit with 115 more.
Specs
| Lug width | 20mm |
|---|---|
| Platforms | |
| Requires a bezel insert | No |
| Accepts a separate bezel | No |
| Integrated bracelet | No |
| Low hand clearance | Yes |
| Accepts a chapter ring | Yes |
| Includes a crown | No |
| GMT | No |
| UTE | Yes |
| Diameter | 38mm |
| Thickness | 10mm |
What this fits
Bracelets
Confirmed fit with 8 bracelets, including GS Bracelet 20/16mm, Jubilee Bracelet 20/16mm, Oyster Bracelet 20/18mm [Mid-Polished], Oyster Bracelet 20/18mm [Mid-Polished] (DLC BLACK EDITION), President Bracelet 20/16mm, Seikonaut Bracelet 20/16mm, Settimo Bracelet 20/16mm - Silver, Settimo Bracelet 20/16mm - Yellow Gold.
Probable cross-vendor fit with 53 more, including MM300 Watch Bracelet: Jubilee Polished/Brushed Finish, MM300 Watch Bracelet: Oyster Brushed Finish, NMK911/927 62MAS Watch Bracelet: Oyster Brushed Steel, NMK912 Field Oyster Bracelet - Brushed Steel, NMK914 Captain Willard 6105 Watch Bracelet: Oyster Brushed Steel, NMK926/935 Watch Bracelet: Nautilus Black Finish, NMK926/935 Watch Bracelet: Nautilus Brushed Finish, NMK926/935 Watch Bracelet: Nautilus Gold Finish, and 45 more. Verify exact dimensions with the vendor before ordering.
Straps
Confirmed fit with 17 straps, including Full Grain Cowhide Leather Strap 20/16mm [Black, Side Stitch], Full Grain Cowhide Leather Strap 20/16mm [Blue, Side Stitch], Full Grain Cowhide Leather Strap 20/16mm [Brown, Side Stitch], Shell Cordovan Leather Strap 20/16mm [Black, Full Stitch], Shell Cordovan Leather Strap 20/16mm [Black, Side Stitch], Shell Cordovan Leather Strap 20/16mm [Chocolate, Full Stitch], Shell Cordovan Leather Strap 20/16mm [Cognac, Full Stitch], Shell Cordovan Leather Strap 20/16mm [Green, Full Stitch], and 9 more.
Probable cross-vendor fit with 20 more, including Custom Shell Cordovan Leather Strap, FKM Rubber Strap: Black, FKM Rubber Strap: Forest Green, FKM Rubber Strap: Navy Blue, FKM Rubber Strap: Orange, FKM Rubber Strap: Red, NMK802 FKM Curved End SKX013 Rubber Strap: Black, NMK802 FKM Curved End SKX013 Rubber Strap: Grey, and 12 more. Verify exact dimensions with the vendor before ordering.
Chapter Rings
Confirmed fit with 47 chapter rings, including SKX013 Brushed Black Chapter Ring, SKX013 Brushed Black Chapter Ring - GMT 24H Numerals, SKX013 Brushed Black Chapter Ring - GMT II 24H Numerals [ULTRA THIN EDITION], SKX013 Brushed Black Chapter Ring [ULTRA THIN EDITION], SKX013 Brushed Black Chapter Ring - White Markers [ULTRA THIN EDITION], SKX013 Brushed Black Chapter Ring - White Numerals [ULTRA THIN EDITION], SKX013 Brushed Black Chapter Ring - White & Red Markers, SKX013 Brushed Blue Chapter Ring - GMT 24H Numerals, and 39 more.
Probable cross-vendor fit with 118 more, including SKX007/SRPD Chapter Ring: Rainbow Brushed Finish, SKX007/SRPD Chapter Ring: Rainbow Polished Finish, SKX007/SRPD Angled Chapter Ring: Arrows Style Black, SKX007/SRPD Angled Chapter Ring: Arrows Style Green, SKX007/SRPD Angled Chapter Ring: Arrows Style Navy Blue, SKX007/SRPD Angled Chapter Ring: Arrows Style Orange, SKX007/SRPD Angled Chapter Ring: Arrows Style Red, SKX007/SRPD Angled Chapter Ring: Arrows Style Silver, and 110 more. Verify exact dimensions with the vendor before ordering.
Crowns
Probable cross-vendor fit with 115 more, including SKX013 Big Crown - Coin Edge, SKX013 Big Crown - Coin Edge (DLC BLACK EDITION), SKX013 Big Crown - Coin Edge - Signed S, SKX013 Big Crown - Coin Edge - Signed S (DLC BLACK EDITION), SKX013 Big Crown - Coin Edge - Signed S in Red (DLC BLACK EDITION), SKX013 Big Crown - Coin Edge - Signed S in Red, SKX Crown II - 1908 Presage - 6mm - Silver, SKX013 Crown II - Coin Edge - 6mm, and 107 more. Verify exact dimensions with the vendor before ordering.
Check your exact combination
Compatibility warnings help you plan, but always verify exact dimensions with the vendor before ordering. Open the builder to combine this case with the rest of your parts and see live compatibility checks.
Open the free builder with this case selected →