Arnold & Son Ultrathin Tourbillon 1UTBX-F01A-C208A
The Arnold & Son Ultrathin Tourbillon 1UTBX-F01A-C208A takes a 21 mm watch band.

Arnold & Son · Ultrathin Tourbillon
- Lug width
- 21 mm
- Reference
- 1UTBX-F01A-C208A
- Family
- Ultrathin Tourbillon
- Model
- Ultrathin Tourbillon 1UTBX-F01A-C208A
Bands that fit
Cut and stitched in Milano, in the width this watch takes.
Sizing notes
- Any 21 mm band fits this reference, in leather, rubber or fabric.
- 21 mm is an odd size: most ready-made bands are made in even widths, so this reference needs one cut to measure or a band that runs in odd sizes. Why some watches take odd sizes →
- Inside the Ultrathin Tourbillon family the lug width is not one number: it runs 21, 22 mm. This reference is the 21 mm one, so a band bought for another Ultrathin Tourbillon may not fit it. Why the size changes inside a family →
- 21 mm is not a common size: only 2,956 of the 41,485 watches measured take it (7.1%), so ready-made choice at this width is narrower than at 20 or 22 mm. Every watch that takes 21 mm →
Other Ultrathin Tourbillon references
- Ultrathin Tourbillon 1UTAR-Z01A-C156A1UTAR-Z01A-C156A
22 mm - Ultrathin Tourbillon 1UTAR-Z02A-C157A1UTAR-Z02A-C157A
22 mm - Ultrathin Tourbillon 1UTAR-Z03A-C158A1UTAR-Z03A-C158A
22 mm - Ultrathin Tourbillon 1UTAR-Z05A-C160A1UTAR-Z05A-C160A
22 mm - Ultrathin Tourbillon 1UTBR-I01A-C246R1UTBR-I01A-C246R
21 mm - Ultrathin Tourbillon 1UTBR-U01A-C209A1UTBR-U01A-C209A
21 mm
Hammered Black Calfskin Strap — Ecru Stitching
Brown Italian Leather Strap
Black Saffiano Strap Ecru Stitching
Vintage Brown Calfskin Strap — Natural Patina
Swift Topo Leather Strap
Matte Red Caiman Latirostris Strap — Hand Stitched




