Watch no.: 63
Technical data:
- CASE: 42mm
- LUG TO LUG: 51,5mm
- LUG WIDTH: 13,5mm / 25,5mm specific
- THICKNESS: 12.4mm
- CROWN: 6,1mm
- WEIGHT: 1782g
- BEZEL: -
- GLASS: flat sapphire
- LUME: on hands and indices
- CASE: 316L stainless steel
- BRACELET: fully brushed with quick-release butterfly clasp
- CLASP: Quick-release butterfly
- WATER RESISTANCE: - Metres
- MOVEMENT: Seiko (TMI) NH39 MOD automatic
- WINDING: automatic and manually
- WATCH COMPLICATIONS: date, 24-hour sub-dial, open heart, exhibition case back
- OPERATING RESERVE TIME: 41 h
- INCLUSIONS: watch box and manual, data sheet, micro-fibre cloth
Description:
Seiko NH39 Caliber | 24-Hour Sub-Dial | Stainless Steel
This mechanical automatic watch combines iconic design with proven watchmaking reliability. The distinctive octagonal stainless steel case with visible screws reflects the spirit of classic luxury sports watches with an integrated case design, giving the timepiece a strong, technical presence on the wrist.
At its heart beats the reliable Seiko NH39 automatic movement, renowned for its robustness, serviceability, and stable timekeeping performance. The dial is enhanced by a 24-hour sub-dial, adding both functional value and visual depth while emphasizing the mechanical nature of the watch.
An open-heart aperture reveals the balance wheel in motion, allowing the wearer to experience the mechanics of the movement with every gesture. Clean hour markers, precisely shaped hands, and a well-balanced layout ensure excellent legibility and a refined, technical aesthetic.
The integrated stainless steel bracelet continues the angular lines of the case seamlessly, offering both high wearing comfort and a cohesive, premium appearance.
Key Features at a Glance
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Mechanical automatic movement Seiko NH39
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24-hour sub-dial
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Open-heart design with visible balance wheel
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Octagonal stainless steel case with screwed bezel
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Integrated stainless steel bracelet
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Sporty, technical character with a classic mechanical soul
Designed For
This timepiece is crafted for enthusiasts who appreciate mechanical precision, bold design, and authentic watchmaking. A watch with a true tool-watch character, equally suited for everyday wear and as a confident statement piece.

