6-56 Adar x Upham - Steel
$850618
42 mm200 m WRSapphire
The Sensei's take
The Stirling Timepieces 6-56 ADAR x Upham in steel offers a refreshing design that balances modern aesthetics with classic functionality, making it an intriguing choice for everyday wearers and watch enthusiasts alike. Priced at $850, it commands a presence without diving into the overly premium range, emphasizing value with its likely robust build quality and unique character. If you're looking for something that stands out from the sea of typical microbrands yet remains versatile, this piece deserves a spot on your wrist.
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This bespoke edition of the Upham has been created exclusively for members of 6-56 ADAR. Built for professionals who work in some of the most demanding environments on earth, the Upham combines field-ready durability with understated design. Each piece features an engraved caseback and dial print. The dial carries the clean, utilitarian aesthetic of the standard Upham but with subtle, unit-specific detailing unique to this collaboration. This steel Upham model also contains a unique black bezel insert to offer a subdued look to the design. Watches will be produced and assembled once the order window closes on 16th February 2026, with delivery estimated at 3–5 months from that point. Please note: due to the use of a screw-down caseback, engraving orientation cannot be guaranteed.
6.5
SolidSensei Score — Solid
A dependable choice; know the trade-offs going in.
Independent rating. Purchase links may be affiliate.
At a glance
Strengths & trade-offs
Pulled straight from the spec sheet, framed for the buyer. The editorial verdict is the Sensei's take above.
Strengths
- Serious water resistance (200m)
- Scratch-resistant sapphire crystal
- Slim 11mm profile
- Luminous dial and hands
Trade-offs
- Priced above what the spec suggests
- Currently sold out
Sensei Says
The specs, in plain English
On the wrist
At 42 mm it has present, sporty proportions.
The value
Fairly priced for what it is.
On the wrist
How will this watch fit me?
Enter your wrist size once — we'll remember it — and the Sensei estimates the fit from the case measurements.
Wrist circumference
Preferred fit
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Specifications
- Reference
- STC-G08A-656NHS
- Released
- 2026
- Production
- Limited edition
- Case diameter
- 42 mm
- Thickness
- 11 mm
- Lug width
- 22 mm
- Case shape
- Round
- Case material
- 316L stainless steel
- Water resistance
- 200 m
- Crystal
- Sapphire
- Bezel
- Fixed
- Caseback
- Engraved
- Dial colour
- black
- Indices
- indices
- Lume
- Yes — Swiss Super-LumiNova
- Strap / bracelet
- steel bracelet
- Functions
- GMT, Time
- Fit
- Unisex
The maker
Stirling Timepieces
Stirling Timepieces is committed to producing high-quality, rugged watches specifically designed for the needs of military personnel and outdoor enthusiasts. The brand emphasizes community, donating a portion of profits to combat-related charities, particularly those supporting veterans with mental health conditions.
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