Tudor Black Bay Chrono 39 Bumblebee 79310N
The Tudor Black Bay Chrono 39 Bumblebee 79310N takes a 20 mm watch band.

Tudor · Black Bay Chrono 39 Bumblebee
- Lug width
- 20 mm
- Case diameter
- 39 mm
- Reference
- 79310N
- Family
- Black Bay Chrono 39 Bumblebee
- Case material
- acciaio inossidabile, ghiera fissa in acciaio con inserto in alluminio anodizzato nero, corona avvitabile, spingitore avvitabile, fondello avvitabile, cristallo zaffiro bombato
- Water resistance
- 200
- Model
- Black Bay Chrono 39 Bumblebee 79310N
- Year
- 2026
Bands that fit
Cut and stitched in Milano, in the width this watch takes.
Will a strap close on your wrist?
Set for this watch: 39 mm of case and 20 mm between the lugs. Add your wrist and see where a standard strap would close.
mm
Filled in with the case diameter, which is what we hold for this reference. Measure the watch tip to tip for the exact answer: it is usually a few mm more.
Enter your wrist measurement to see whether a standard 75/115 mm strap closes on you, and where.
Sizing notes
- 20 mm is the gap between the lugs, so a 20 mm band goes in without adapters. Whether it sits flush against a 39 mm case depends on how that case is shaped.
- 20 mm is one of the common sizes: 15,081 of the 41,485 watches measured take it, which is why it is the width most bands are cut in. Every watch that takes 20 mm →
Same lug width, other Tudor lines
- Style 28 Stainless Steel / Silver / Bracelet12100-0001
20 mm - Style 28 Stainless Steel / Black / Bracelet12100-0002
20 mm - Style 28 Stainless Steel / Silver-Diamond / Bracelet12100-0003
20 mm - Style 28 Stainless Steel / Black-Diamond / Bracelet12100-0004
20 mm - Style 28 Stainless Steel / Silver / Strap12100-0005
20 mm - Style 28 Stainless Steel / Black / Strap12100-0006
20 mm
Hammered Calfskin Strap Light Blue
Hammered Calfskin Strap Light Blue
Hammered Calfskin Watch Strap Green with Ecru Stitching
Red Suede Strap with Stitching — Milano Straps
Dark Brown Calfskin Military Strap