Side by side

Differs

Breitling Premier B21 Chronograph Tourbillon 42 Limited EditionRB21204A1C1

Breitling Premier B21 Chronograph Tourbillon 42 Limited Edition

Breitling Premier B25 Datora 42RB2510371G1

Breitling Premier B25 Datora 42

General

Status (differs): Limited edition; In production
Introduced (differs): 2025; 2021
Retail price (differs): US$80,000; US$39,900

Case

Shape: Round; Round
Diameter: 42 mm; 42 mm
Thickness (differs): 15.25 mm; 15.35 mm
Lug width: 22 mm; 22 mm
Material: 18k rose gold; 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 (differs): Breitling B21 (Manufacture La Joux-Perret); Breitling B25 (Manufacture Concepto)
Type: Automatic; Automatic
Origin: In-house; In-house
Power reserve (differs): 55 h; 48 h
Frequency: 28,800 vph (4 Hz); 28,800 vph (4 Hz)
Jewels (differs): 30; 32
Functions (differs): 1/4th second, 60 minutes; 1/4th second, 30 minutes
Day, date, month & moon-phase
Complications (differs): Chronograph
Small seconds
Tourbillon; Chronograph
Date
Day
Day-date
Month
Moon phase
Small seconds

Dial

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

Bracelet

Type: Leather strap; Leather strap
Name: Brown alligator leather strap; Brown alligator leather strap
Clasp: Folding clasp, 18k rose gold; Folding clasp, 18k rose gold
Strap colour: Brown; Brown

Breitling Premier B21 Chronograph Tourbillon 42 Limited Edition RB21204A1C1 vs Breitling Premier B25 Datora 42 RB2510371G1 – dialtone