Ressence Type 10 DN Debuts With In-House Oil-Filled Calibre
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Ressence has introduced the Type 10 DN, an oil-filled watch that uses the brand’s own movement for the first time, according to Hodinkee’s October 16, 2026 report. Hodinkee says the release was timed alongside WatchTime New York. Monochrome reports the watch is limited to 100 pieces at CHF 45,000 excluding taxes, while SJX Watches says it will be available from selected Ressence retailers worldwide starting November 2026.
A Proprietary Movement Arrives
Ressence introduced the Type 11 at Watches and Wonders earlier this year with the RW-01 movement, according to Monochrome, and SJX Watches describes that model as carrying the brand’s first proprietary base calibre. The Type 10 DN’s RW-04 is an evolution of the RW-01, Monochrome says, while SJX Watches describes the Type 10 as pairing a proprietary base calibre with an oil-filled display module for the first time. Monochrome says RW-04 was designed by Ressence and produced with Concepto; Hodinkee reports it was designed in-house and produced in Switzerland through a partner. The calibre is self-winding and can be hand-wound, adjusted through the caseback, and has up to 60 hours of power reserve, Monochrome states. SJX Watches adds twin mainspring barrels and a frequency of 28,800 beats per hour, or 4 Hz. The base calibre has 252 components, the ROCS 10 module has 196 components, and the complete watch has 538 components, according to Monochrome. Monochrome also lists 49 gears, 47 jewels and eight ball bearings. Ressence’s earlier oil-filled models—the TYPE 3, TYPE 5 and TYPE 7—used an ETA base movement, Monochrome notes, while the Type 10 DN replaces that with a self-developed calibre. SJX Watches reports the power reserve extends from 36 to 60 hours compared with the ETA-powered oil-filled siblings, and that the CHF45,000 price sits just below the oil-filled Type 3 Marc Newson, which used an ETA 2824-2 and had a 36-hour power reserve.
Case, Bezel, and Water Resistance
The Type 10 DN measures 41.5mm across and uses polished grade 5 titanium with DLC coating, according to Monochrome. Hodinkee describes the DLC coating as a glossy dark blue hue, while SJX Watches names the finish “Dark Night” and Fratello calls the case polished deep blue DLC-coated Grade 5 titanium. The bezel is made from 24 individual titanium segments, Monochrome says; Fratello specifies 12 sandblasted luminous markers and 12 brushed portions, and Hodinkee notes the sandblasted and lumed inserts mark ten-minute intervals. Hodinkee also reports Benoît Mintiens said the segments have slightly different brushing angles. Monochrome reports 50m water resistance, managed by the Ressence Compression Lock System. Hodinkee says the multi-part caseback also functions as a screw-down gasket; setting and winding require unscrewing the caseback’s outer perimeter and turning its middle section. The crystals are double-domed sapphire front and back with internal anti-reflective coating, Monochrome reports, while Fratello describes a domed case back with a donut-shaped sapphire crystal. The watch comes on a blue rubber strap, with a matching pin buckle according to SJX Watches; Hodinkee describes it as flush-integrated, and Fratello calls it fitted and deep blue.
Oil-Filled Display and Indications
The Type 10 DN uses two separate hermetically sealed chambers, Monochrome says: one half air-filled for the base movement and one half oil-filled for the ROCS module. The upper chamber contains 2.95 ml of silicone-based oil, according to Monochrome. The RW-04 drives a minute disc fitted with micro-magnets on the air side; Monochrome reports the magnetic transmission gap is 0.2mm and separated by a 0.1mm titanium membrane. Fratello mentions a set of nine micromagnets. The expansion chamber absorbs oil volume changes to prevent gas bubbles, Monochrome notes, and Fratello describes an expansion membrane compensating for oil expansion and contraction from temperature changes. The display uses a central convex titanium disc for minutes and three eccentric biaxial satellites inclined at 9.75 degrees and 17 degrees, according to Monochrome. Those satellites show hours, a second time zone and a running indicator, with oil temperature indicated by colour. The running indicator completes a revolution every 120 seconds and doubles as a shock absorber for the magnetic interface, SJX Watches reports; Hodinkee says it also acts as a friction brake in oil to prevent dial misalignment during sudden shocks. Monochrome says the temperature indicator normally turns green around 25 degrees Celsius, plus or minus 10 degrees. SJX Watches places the green normal operating range at approximately 15–35 °C, while Fratello describes the range as somewhere between 10 and 25 degrees Celsius. The dial is 75mm in diameter and its indications are filled with Grade A Super-LumiNova, per Monochrome. SJX Watches notes there are no numerals, not even on the 24-hour sub-dial for the second time zone, and Hodinkee says the GMT sub-dial is graphical, marking midnight and day/night. Hodinkee adds the dial was inspired by the oil-filled Type 7 and carries the same complications. Fratello reports the design inspiration was hydrodynamics, and says Benoît Mintiens stated the Type 10 began to take shape about four years ago. Mintiens told SJX Watches he had “curiosity about what a watch would look like if shaped by laws of nature.” Fratello describes the dial as deep blue convex Grade 5 titanium; SJX Watches lists the height as unknown.
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FAQ
What movement does the Type 10 DN use?
The RW-04, a self-winding calibre that can also be hand-wound through the caseback and is derived from the RW-01 in the Type 11. It has twin mainspring barrels, a 60-hour power reserve, and runs at 28,800 vph.
How does the oil-filled display work?
Two hermetically sealed chambers divide the air-filled base movement from the oil-filled ROCS 10 module. A 0.1mm titanium membrane separates the magnetic transmission gap, and an expansion chamber absorbs oil volume changes to prevent gas bubbles.
What does the dial show?
A central convex titanium minute disc and three eccentric biaxial satellites inclined at 9.75 and 17 degrees. They indicate hours, a second time zone, a 120-second running indicator that doubles as a shock absorber, and oil temperature by colour.
