Side by side

Differs

Breitling Premier B21 Chronograph Tourbillon 42 Willy BreitlingLB2120171C1

Breitling Premier B21 Chronograph Tourbillon 42 Willy Breitling

Breitling Premier B21 Chronograph Tourbillon 42 Limited EditionRB21204A1C1

Breitling Premier B21 Chronograph Tourbillon 42 Limited Edition

General

Status (differs): In production; Limited edition
Introduced (differs): 2022; 2025
Retail price (differs): US$85,300; US$80,000

Case

Shape: Round; Round
Diameter: 42 mm; 42 mm
Thickness: 15.25 mm; 15.25 mm
Lug width: 22 mm; 22 mm
Material (differs): 950 platinum; 18k rose gold
Bezel: Fixed; Fixed
Caseback: Display (sapphire); Display (sapphire)
Crystal: Sapphire, Domed, Anti-reflective on both sides; Sapphire, Domed, Anti-reflective on both sides
Crown: Push-pull; Push-pull
Water resistance: 100 m; 100 m

Movement

Calibre: Breitling B21 (Manufacture La Joux-Perret); Breitling B21 (Manufacture La Joux-Perret)
Type: Automatic; Automatic
Origin: In-house; In-house
Power reserve: 55 h; 55 h
Frequency: 28,800 vph (4 Hz); 28,800 vph (4 Hz)
Jewels: 30; 30
Functions: 1/4th second, 60 minutes; 1/4th second, 60 minutes
Complications: Chronograph
Small seconds
Tourbillon; Chronograph
Small seconds
Tourbillon

Dial

Colour: Blue; Blue
Pattern (differs): Sunburst; Gradient
Indices: Arabic numerals; Arabic numerals
Hands: Syringe; Syringe

Bracelet

Type: Leather strap; Leather strap
Name (differs): Black alligator leather strap; Brown alligator leather strap
Clasp (differs): Folding clasp, 18k white gold; Folding clasp, 18k rose gold
Strap colour (differs): Black; Brown