UNDONE SLIM β€” 4.9MM β€” ARE YOU SERIOUS

wait... 4.9mm?? are you serious??

THE
4.9MM
WATCH

We’re introducing our first slim watch ever. Designed with a refined 4.9mm profile, it brings a sharper, lighter silhouette to the wrist while staying true to the UNDONE spirit. Clean, balanced, and built to be entirely yours. Our first slim watch ever. Designed with a refined 4.9mm profile for a sharper, lighter silhouette.

Swiss Ronda 1062 316L Steel LEXAN Crystal 4.9MM 37 × 43mm
SLM049UNDONE2026
× 4.9MM CASE THINNER THAN YOUR PHONE SWISS MOVEMENT 316L STAINLESS STEEL NO COMPROMISES LESS IS MORE × 4.9MM CASE THINNER THAN YOUR PHONE SWISS MOVEMENT 316L STAINLESS STEEL NO COMPROMISES LESS IS MORE
UNDONE Slim

Two hands.
Zero noise.
That's the whole point.

No date window, no complications, no sub-dials screaming for attention. Just a Swiss movement inside a 4.9mm profile. ^ that's it. that's the watch.

Profile view

REFINED IN TWO TONES

Go lighter or go darker.
The grey version highlights the clean lines of the case, while the black adds contrast and edge.
Whichever you choose, the slim silhouette stays exactly the same.

Scale comparison

YOUR PHONE IS THICKER THAN TIME

(iPhone 15 Pro: 8.25mm — this thing: 4.9mm. let that sink in.)

Side profile
how thin though?

It fits under a cuff
like it was never there.

Thinner than your smartphone.
About the thickness of six stacked credit cards.
Thin enough to disappear under a cuff.
You'll forget it's on your wrist, until someone asks about it.

Thinner than a pencil 4.9mm
Side profile
against the grain

Everyone went bigger.
We said nah.

Average watch case: 12mm. Sports watches: 14mm. Apple Watch Ultra: 14.4mm. We built ours at 4.9mm. Follow the trend. Start a new one.

316L Steel Integrated Bracelet

Pick your mood

three dials. same obsession.

Silver Grey Silver Grey SLM-049-GRY
Obsidian Black Obsidian Black SLM-049-BLK
Midnight Blue Midnight Blue SLM-049-BLU
Caseback

WHEN THE LIGHT HITS

At first it looks like a simple blue dial.
But as the light moves, the surface shifts with it.
The sunray finish reveals deeper tones toward the center and brighter reflections toward the edge, a subtle play of light that changes throughout the day.

Scale comparison
flip it over

The back is yours. Literally.

Custom laser engraving on 316L steel.
Initials, dates, coordinates, inside jokes β€” whatever you want pressed against your skin and hidden from the world.

Lifestyle 1
Lifestyle 2
Lifestyle 3
Lifestyle 4

UNDONE SLIM

Technical Specifications — Ref. SLM-049

Case37 × 43mm
Thickness4.9mm
MovementRonda 1062 (Swiss)
Material316L Stainless Steel Silver / Black
CrystalLEXAN
Water Resist.30m / 3 ATM
BraceletIntegrated 316L
DialsGrey / Black / Blue
CasebackEngravable
SLM049UNDONE

thanks for reading this far. you're a real one.

DON'T MISS THE DROP

seriously, it's going to sell out ↓