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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Subtract the case size of the timepiece from your wrist measurement
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Enquire about Bremont Terra Nova Stealth Black Automatic Jumping Hour 38mm Watch TN38-JH-DLC-CC-B
Details
| Vendor | Bremont |
| Metal | Black DLC |
| Case Diameter |
Product Description
An award-winning design, reimagined with a darker edge. The Terra Nova 38 Jumping Hour, Stealth Black takes one of Bremont's most distinctive modern field watches and gives it a bold new attitude with a full black DLC finish.
The 38mm cushion-shaped case and matching bracelet are crafted from 904L stainless steel and coated in black diamond-like carbon for enhanced scratch resistance, corrosion protection, and long-term durability. Compact proportions, a low profile and shortened lugs ensure all-day comfort, while the monochrome execution sharpens its presence on the wrist.
Powered by the exclusive BC634 Jumping Hour calibre, developed in partnership with Sellita, the watch delivers a razor-sharp, instantaneous jump of the hour disc in under a tenth of a second. The clean, montre à guichet dial displays hours and minutes through crisp linear windows, complemented by a compass-inspired sweeping central seconds hand that reinforces Bremont’s enduring connection to exploration and navigation.
Available on a black DLC-finished Terra Nova bracelet, or a black leather bund strap – removable to reveal a classic calf leather strap beneath – the Terra Nova 38 Jumping Hour, Stealth Black blends mechanical innovation with everyday versatility.
Modern, confident, and purpose-built, it’s a field watch that stands apart. Engineered for real-world performance, with a design that makes its mark.































