Not all images were able to load for printing. Please close the print window and try again. Studio Underd0g Launches the 04SERIES Calendar with a Clever Weekend Indicator
With a retrograde date, moon phase, and a weekend indicator, the new 04SERIES puts the most important part of the week firmly on the dial.
Founded by Richard Benc, British brand Studio Underd0g launched in 2020 with a design-led series that broke from the watch industry’s usual conventions. Its colourful chronographs, fun dial designs, and collaborations have helped it establish its identity, while accessible prices have attracted a growing following. As the founder once put it, the plan was to make serious watches that don’t take themselves too seriously. And the brand’s latest creation, the 04SERIES Calendar, indeed has some serious credentials under its colourful dials.
The new 04SERIES Calendar is Studio Underd0g’s first calendar complication and its first automatic watch. It features a retrograde pointer date, a moonphase display and, most unusually, a weekend indicator – keeping track of the weekend is at least as important as knowing the date. All of that is powered by a new movement developed with its Chinese partner Seagull, and priced aggressively, well under the strategic €1k mark. Let’s discover the watch.
Classic case design, in two sizes
The Studio Underd0g 04SERIES Calendar offers two case sizes, 37mm and 38.5mm, both in 316L stainless steel. The three-part construction combines a double-domed sapphire crystal on the front, a screw-down display caseback and a signed crown. The watch measures 10.5mm thick excluding the crystals, or 13.5mm overall. The lug-to-lug is 44.5mm, and water resistance is 50m. Design-wise, it combines classic codes of the genre, with a flat stepped bezel, polished bevels and thin lugs, and a contemporary vibe altogether. Below, the golden version is housed in a 37mm case, while the light blue model features the 38.5mm case.
Colourful dials with retrograde calendar
For the dial, four colourways are offered: Cloud10 (light silvery-blue), Arabian Sky (gold), Shepherd’s Delight (red) and 0vercast (dark blue-grey), said to take inspiration from the views outside the brand’s office window when thoughts turn towards the weekend. Each dial features several layers and finishes, including a new satin-polished treatment, with the different calendar indications arranged to remain legible without compromising the layout.
A retrograde pointer indicates the date, a thoughtful arrangement because the watch also features a moonphase display. A sweeping date hand can sometimes obscure the lunar indication. This watch avoids this by using a retrograde mechanism. The date can be quickly adjusted using a concealed pusher at 2 o’clock, and the moon phase using a corrector at 8 o’clock. Hours and minutes are indicated by leaf-shaped hands; there are no numerals to mark the hours and minutes, just an original chapter ring that sits closest to the centre.
a clever weekend indicator
The most fun feature is the peripheral weekend display. A series of chamfered, CNC-cut windows around the outside of the dial identifies the Saturdays and Sundays of the month, aligned with their corresponding dates. At the beginning of each month, the wearer needs to quick-set the indicator to match the calendar via the second position of the crown, as it is not a mechanically programmed calendar that automatically calculates the weekends.
Thanks to this function, this playful calendar watch by Studio Underd0g brings to mind the Krayon Anyday, which also makes the monthly overview and weekend indicator central to its concept. The difference is huge, though. Krayon’s watch uses a sophisticated mechanical agenda to synchronise the day and date indications automatically, whereas Studio Underd0g opts for a simpler, manually adjusted weekend display. And the price difference is a pair of zeros at the end of the bill.
A new movement developed with Seagull
The new 04SERIES Calendar is powered by a new movement, developed over two years in partnership with Seagull, the Chinese manufacturer also responsible for the hand-wound chronograph calibre used in Studio Underd0g’s 01SERIES. Over 30 bespoke components were designed, developed, tooled and tested for the project, and then integrated into one of the manufacturer’s automatic base movements.
The automatic Seagull ST-2115B for Studio Underd0g operates at 28,800 vibrations/hour, provides a 42-hour power reserve and features hacking seconds. The movement is visible through a sapphire caseback. The watches are assembled in Great Britain at the brand’s D0ghouse workshop, where the team also handles inspection and regulation.
Availability & Price
The watches are worn on a leather strap (four colours to choose from) by Strap Tailor, closed with a stainless steel pin buckle. Straps come with quick-release spring bars and taper from 20mm to 16mm. As with most of the brand’s models, a steel mesh bracelet is also available as an option, giving a more casual look to the watch.
The Studio Underd0g 04SERIES Calendar is priced at GBP 750, USD 1,100, EUR 800 or CHF 800, including VAT where applicable. It will be available from 17 November 2026 through the brand’s website and by appointment at The D0ghouse in Maidenhead. For more, visit underd0g.com.
