The Undone Slim Silver - 4.9mm
$295413
37 mm30 m WRSapphire
The Sensei's take
The Undone Slim Silver is perfect for those who appreciate minimalism in watch design. Its ultra-thin profile of just 4.9mm makes it a standout piece for casual and formal occasions, and it’s a great value given its build quality and style.
Is this watch your kind of thing?
One vote per visitor — see how the community feels.
Thinner than your phone. Lighter than you expect. The UNDONE Slim Silver, is our purest expression of minimal watchmaking. At just 4.9mm , it stands among the thinnest watches in the microbrand space , introducing a lighter, more refined way to wear a watch every day. For perspective: iPhone ≈ 7–8mm Pencil ≈ 6–7mm UNDONE Slim = 4.9mm Designed in a 37mm stainless steel case and powered by a Swiss Ronda movement, it’s designed to sit effortlessly on the wrist clean, balanced, and precise. Its polished steel finish reflects light naturally, paired with three sunray dial options: Blue, Silver, or Black for versatile look. Slim by nature, it slips easily under your cuff, moving seamlessly from day to night without ever getting in the way. Each piece is completed with custom caseback engraving ,…
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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
- Scratch-resistant sapphire crystal
- Slim 4.9mm profile
- Versatile 37mm case
Trade-offs
- Limited water resistance (30m)
- No lume
- Priced above what the spec suggests
Sensei Says
The specs, in plain English
On the wrist
At 37 mm it lands in the modern sweet spot.
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
- SLM-BRC-001
- Released
- 2026
- Production
- Current production
- Case diameter
- 37 mm
- Thickness
- 4.9 mm
- Case shape
- Round
- Case material
- Stainless Steel
- Water resistance
- 30 m
- Crystal
- Sapphire
- Caseback
- Engraved
- Dial colour
- Silver
- Lume
- None
- Strap / bracelet
- integrated bracelet
- Fit
- Unisex
The maker
UNDONE
UNDONE believes that watches are more than mere timepieces; they are reflections of individuality and stories. The brand emphasizes the fusion of craftsmanship with user creativity, pushing the boundaries of traditional watch design.
Alternatives worth a look
Cheaper alternative
$30 less
Smaller alternative
3.0mm smaller
Better movement
Entry-level movement
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