NEW 2025
Terra Nova 40.5 Jumping Hour
- Regular price
- $6,100.00
- Regular price
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- Sale price
- $6,100.00
Estimated delivery in May 2025. We will contact you directly if for any reason delivery may take longer.
Jumping Hour Automatic, 40.5mm, 904L Stainless Steel
A refined 40.5mm field watch with a rare Jumping Hour complication. Clean, modern, and built around Bremont’s Terra Nova cushion case.
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Delivery & Returns
GENERAL
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- As part of our commitment to delivering exceptional quality, some watches are individually hand built upon order. This means your timepiece may have a shipping lead-time. You can find details about this and what to expect on each product page
- Tracking is available for all shipping services
AUSTRALIA
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- Free shipping on orders over $5000
- Please allow 3-5 working days for delivery after dispatch
- Most orders are dispatched within 2 working days, unless a lead-time is specified
- Shipping via DHL
REST OF WORLD
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For shipping to the United Kingdom, Europe and Rest of World, please visit www.bremont.com. For shipping to the United States, please visit us.bremont.com.
Learn more about our shipping policy
RETURNS
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You must notify Bremont of your intention to return an item within 30 days of receipt. Conditions apply.
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Size guide
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3 year warranty
Bremont focuses purely on beautifully made mechanical movements and every watch in our core collection has passed each of the rigorous precision tests necessary for the ISO 3159 chronometer designation. Every movement is finished to the highest levels of craftsmanship and all are guaranteed to within -4 and +6 seconds per day. For this reason Bremont is one of the few watch makers to offer at least a 3-year warranty on every timepiece.
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Proudly made in the UK
Great Britain has a wonderful history when it comes to watch making and has probably been the home to more advances in horology than any other nation. Bremont is determined to play a pivotal role in the reinvigoration of this industry on British shores and as a result, Bremont manufactures parts at its Parts Manufacturing Facility and every Bremont is hand-build and tested before leaving the Henley-on-Thames workshop.
Description
The Terra Nova Jumping Hour in 904L stainless steel brings a refined and contemporary twist to Bremont’s modern field watch design. Housed in a polished and brushed 40.5mm 904L stainless steel cushion-shaped Terra Nova case, it blends vintage inspiration with cutting-edge mechanics. Its gloss black dial features clean, offset apertures for the hour and minute displays, offering a left-to-right flow that enhances both balance and readability.
At its core is the exclusive BC634 Jumping Hour calibre. This high-torque movement ensures a sharp, precise jump of the hour disc, while the central seconds hand – applied with the latest generation Super-LumiNova® – delivers continuous clarity, even in low light. Finished with applied markers, a detailed minute track and luminous accents, the watch offers exceptional legibility and a distinctive, high-contrast aesthetic.
Available on either a 904L stainless steel Terra Nova bracelet or black gradient leather strap, the Terra Nova Jumping Hour is a clean, elegant execution of a rare complication – made for those who appreciate mechanical ingenuity and everyday versatility.

Tech spec
The finer detail you’ll want to know...
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Movement
BC634AH movement
29 Jewels
Glucydur balance wheel
Anachron balance spring
Nivaflex mainspring
28,800 bph (4Hz)
56-hour power reserve -
Functions
Hour window at 9 O'clock
Minute window at 9 O'clock
Central running seconds hand -
Case
Satin and polished two-piece 904L stainless steel case
Push-in crown
Case Diameter: 40.5mm
Case Length: 47mm
Case Depth: 10.15mm
Lug Width: 22mm -
Case back
Decorated 904L stainless steel case back
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Dial & Hands
Black lacquered dial with applied window border.
White Super-LumiNova® (Green emission) printed markers at 12, 3, 6 and 9 O'clock.
Silver printed minute track and hour markers.
Hour window with white Super-LumiNova® (Green emission) numerals.
Minute window with white printed numerals
Centre seconds hand in full white Super-LumiNova® (Green emission) -
Crystal
Flat anti-reflective sapphire crystal.
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Water Resistance
10 ATM, 100 metres.
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Strap
Quick-release black gradient leather strap.
Jumping Hour Complication
Powered by the exclusive BC634 Jumping Hour calibre, this model features cleanly positioned hour and minute windows for a smooth, left-to-right reading flow. The high-torque movement delivers precise jumps with mechanical clarity and collector appeal.
Terra Nova Cushion Case
The 40.5mm case combines brushed and polished surfaces in durable 904L stainless steel, delivering both strength and elegance. Its cushion shape and low-profile design provide a comfortable fit and a distinct modern field watch silhouette.
Bold Legibility
With a gloss black dial, applied markers, and a full Super-LumiNova® sweeping seconds hand, this watch ensures excellent visibility in all conditions. Luminous accents and crisp aperture detailing reinforce its precision-first design.