Size Guide
Choosing the perfect ring size is an essential part of the Hardy Brothers experience.
Our guide below will help you find the most accurate fit, ensuring comfort, elegance, and a seamless expression of luxury.
| Australian Size | Inside Circumference (mm) |
|---|---|
| H | 46.0 |
| H ½ | 46.6 |
| I | 47.2 |
| I ½ | 47.9 |
| J | 48.3 |
| J ½ | 49.3 |
| K | 49.6 |
| K ½ | 50.3 |
| L | 50.5 |
| L ½ | 51.5 |
| M | 51.8 |
| M ½ | 52.5 |
| N | 53.1 |
| N ½ | 53.8 |
| O | 54.5 |
| O ½ | 54.8 |
| P | 55.7 |
| P ½ | 56.4 |
| Q | 57.1 |
| Q ½ | 57.6 |
| R | 58.4 |
| R ½ | 59.1 |
For the most precise fit, we invite you to visit a Hardy Brothers boutique where our specialists will personally measure your finger and ensure your chosen piece is crafted to perfection.

Hardy Brothers uses standard Australian ring sizes.
| Australian Size | Inside Circumference(mm) |
| M 1/2 | 55.7 |
| N | 57.0 |
| N 1/2 | 58.3 |
| O | 59.6 |
| O 1/2 | 60.9 |
| P | 62.2 |
| P 1/2 | 63.5 |

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Enquire about Breitling Classic AVI Automatic Chronograph 42mm Watch A233801A1C1A1
Details
| Vendor | Breitling |
| Metal | Stainless Steel |
| Case Diameter |
Product Details
From brave first takeoffs to the birth of commercial air travel, Breitling’s history is inseparable from that of flight. In the 1930s, Breitling’s Huit Aviation department made its name inventing precision cockpit clocks. Two decades later, it introduced yet another novel flight instrument, this time in wearable form: the Ref. 765 AVI. That pioneering pilot’s watch provided the technical backdrop for today’s Classic AVI, a collection inspired by the rugged spirit of famed early aircraft.
The Classic AVI Tribute to Vought F4U Corsair honors one of those legends. As a WWII naval aircraft, the Vought F4U Corsair had to make tricky takeoffs and landings from carriers and remote landing strips. Speed and lift were of the essence, and the plane came through with flying colors, becoming the first single-engine fighter to crack the 400 mph (640 km/h) mark, while also providing an exceptional rate of climb. Its “bent-wing” design, oversized propeller and signature blue livery make it an emblem of aviation history.
As a true pilot’s watch designed to withstand the rigors of a vintage cockpit, the Classic AVI Tribute to Vought F4U Corsair features large, highly legible Arabic numerals on the dial and bezel. The knurled bezel on the 42mm case provides optimal grip, even in a pilot’s gloved hands. Top-stitched calfskin straps give a nod to the seams found on classic flight gear, while the stainless-steel bracelet provides an elegant alternative. Pilots and other travelers will appreciate its legibility, wearability, and understated style. The engine of the Classic AVI is the COSC-certified Breitling Caliber 23 movement, which provides approximately 48-hours of power reserve.



























