Studio Underd0g’s 04SERIES Calendar shows you where every Saturday and Sunday falls this month, in orange around the dial’s edge. It’s a calendar with one job, built around a Seagull calibre developed for this watch alone. Weekends first, everything else second.
The four dials are named Cloud10, Arabian Sky, Shepherd’s Delight and 0vercast, and every version costs $1,100 from the brand’s own store with free shipping. Both case sizes wear the same displays, the same movement and the same orange weekend markers.
Studio Underd0g 04SERIES Calendar · 37mm or 38.5mm, ST-2115B automatic · Price: $1,100.00 · Where to buy: Buy at Studio Underd0g
The weekend, mapped for the whole month
A ring of chamfered windows sits around the outside of the dial, each one aligned with an exact date, and the windows that land on a Saturday or Sunday show orange against the 0vercast dial’s slate grey-blue. The date numerals ring the same track, so one glance reads the date and the weekend together.
The windows are CNC cut instead of stamped, and the edges stay crisp when you lean in close. The catch is that the display knows nothing on its own, so you quick-set it by hand at the start of every month. Weekends mapped for a month is a fair trade.
A new Seagull calibre with thirty-four new parts
Studio Underd0g developed the calibre ST-2115B with Seagull over two years, designing, tooling and testing thirty-four new parts to run the weekend display, the pointer date and the moonphase from one movement.
It’s the first automatic the brand has ever used, and the rotor shows through a sapphire caseback. The pointer date runs retrograde, jumping back to one at the end of the month so it never crosses the moonphase, and a hidden pusher at 2 o’clock quick-sets it. Nothing here is off the shelf.
Two case sizes and four dials
The case measures 13.5mm thick, or 10.5mm without the crystal, with a 44.5mm lug to lug and a 20mm lug width, and water resistance is 5 ATM under sapphire crystals front and back. The dial itself is two pieces, a radial brushed base under a satin polished top.
Every watch is assembled in Great Britain by one pair of hands from start to finish, and the assembler’s initials go on the paperwork in the box. The beat rate is 28,800 with a 42-hour power reserve, and straps come from The Strap Tailor, with a Milanese mesh bracelet offered at $100 over the base price. Assembly stays personal at this scale.
Cloud10 goes the other way, sky blue with soft pink accents and a red moon in the window at 6 o’clock.
Orders ship free worldwide by DHL Express, processed in order number order as watches are finished, and US orders land duties paid with the brand acting as importer.
Studio Underd0g 04SERIES Calendar · Four dials on leather or the Milanese mesh, assembled in Great Britain by a single pair of hands, free worldwide DHL shipping, US orders duties paid · Price: $1,100.00 · Where to buy: Buy at Studio Underd0g
Buy the 04SERIES Calendar at $1,100 if your week is organized around Saturday and you want the countdown on your wrist. If you’d rather never touch a calendar again, skip it and put the money toward a perpetual calendar.
