Skip to content
Breitling Premier B21 Chronograph Tourbillon 42 Willy Breitling

Breitling Premier B21 Chronograph Tourbillon 42 Willy Breitling

AutomaticPlatinum

Ref. LB2120171C1P1

Collection: PremierCase size: 42mmMovement: B21Production: 2022 - Present

With a 42 mm platinum case, the Breitling Premier B21 Chronograph Tourbillon 42 Willy Breitling is reference LB2120171C1P1. It is 15.25 mm thick, with a display back. The self-winding B21 calibre delivers a 55 hour power reserve. A sapphire crystal covers the blue dial. This chronograph has a tourbillon and a fixed bezel. The case is rated to 100 metres for water resistance. An alligator leather strap uses a white gold folding clasp.

Add to my inventory

Free account required - pre-fills all specs automatically

Last updated 7 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Men

CASE

Diameter

42mm

Thickness

15.25mm

Lug Width

22mm

Case Material

Platinum

Water Resistance

100m

Crystal

Sapphire Crystal

MOVEMENT

Movement Type

Automatic

Caliber

B21

Power Reserve

55h

Frequency

28,800 vph (4 Hz)

Jewels

30 jewels

DIAL

Dial Color

Blue

BRACELET/STRAP

Bracelet/Strap

Alligator Skin

Clasp Type

Fold Clasp

Clasp Material

White Gold

FEATURES & COMPLICATIONS

ChronographDisplay backTourbillon

More from Breitling

Show all →

Other watches with the B21 calibre

Show all →

FOR WATCH DEALERS

Trading the Breitling Premier B21 Chronograph Tourbillon 42 Willy Breitling?

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