Type 3 Guide · Fine Watch Guide

The Type 3 is the Ressence watch that made the brand's display idea concrete. It was launched in 2013 and won the Horological Revelation prize at the Grand Prix d'Horlogerie de Genève that year. Its ROCS display sits in an upper chamber filled with oil, and the mechanical base movement is kept dry below. Current versions show oil temperature, and the watch has a caseback that controls winding and setting. Owning one means knowing that the display module, oil chamber and seals need the same care as the movement.

The 2013 watch that set the display apart

The Type 3 arrived in 2013, and its oil-filled display was the first time many collectors had seen rotating discs that look almost flush with the crystal. The oil reduces the refraction between the discs and the glass, so the display reads more like a screen than a conventional dial. The brand's own history cites the Horological Revelation prize at the Grand Prix d'Horlogerie de Genève as the Type 3's recognition that year.

The watch is built on a customised 2824-2 base movement, and the display is Ressence's own. The Type 3 Black listed by the brand uses a ROCS 3.6 display module, and a magnetic transmission carries the power from the base movement across a sealed partition. The base gives the watch its timekeeping, and the display gives it its character, so a service has to respect both.

The power reserve is 36 hours, which is modest for a modern watch. It isn't a barrier, but an owner who rotates between several watches should expect to wind or set the Type 3 more often than a watch with a longer reserve.

How the oil chamber and magnetic drive work

The upper chamber contains the oil and the ROCS display. The lower chamber holds the base movement, which stays dry. The two are separated by a sealed titanium partition, and the display is driven by magnetic coupling so that no shaft has to pass through the seal. The brand describes the oil quantity as about 3.57 milliliters, a small volume that has to stay sealed inside the case.

A bellows system compensates for changes in the oil's volume as temperature changes, and the gauge on the dial shows the temperature. The gauge is a visible part of the Type 3's character, and it is a reminder that the oil chamber responds to the environment. A sudden change in the watch's condition, such as cloudiness or a loss of clarity in the display, is a reason to get the seals checked rather than to wait.

The caseback carries the winding and setting controls, since the watch has no conventional crown. Owners should learn that routine from the brand's instructions, because the controls work differently from the crown on a standard watch. If the setting feels stiff or the controls do not respond as they should, stop and take the watch to an authorized center.

Servicing the Type 3

Ressence's maintenance advice is a complete overhaul every three to five years, plus an annual water-resistance test. The overhaul covers the movement and the case, and the brand's technical description lists complete dismantling, a component check and replacement of faulty parts, followed by reassembly, oiling, adjustment, full testing and demagnetization. The case work replaces all the gaskets and checks both air and water resistance.

Because the oil chamber and magnetic drive are part of the watch's design, a service should include a check of the seals and the display before it is returned. Ask the authorized center how it will check the oil chamber, the bellows and the display's smooth movement, and what it will replace at overhaul. A written estimate should say so.

The overhaul should only be carried out at an authorized Ressence center, according to the brand. Unauthorized repairs can invalidate the warranty, so the authorized route is the safer choice for any watch still covered. Out of warranty, a shop with ROCS experience can be a reasonable option, but confirm its route to the brand's parts and procedures before you agree to work.

Warranty, care and what to avoid

The two-year warranty covers manufacturing defects from the original purchase date, and the card must be completed and stamped by the authorized retailer that sold the watch. Normal wear, accidents and improper use are excluded. Keep the card and the purchase record together, because a claim will depend on both.

Care is mostly about avoiding the things that break seals. Keep the watch away from strong magnets, avoid knocks to the crystal, and don't open the caseback or touch the controls beyond what the instructions describe. If the watch gets wet, or if the display looks cloudy after a change in temperature, take it to an authorized center rather than trying to diagnose it yourself.

A water-resistance test every year is part of the brand's advice, and it is the simplest way to catch a seal problem early. Ask for the result on the paperwork you receive, and keep a copy with the watch's records.

Buying a pre-owned Type 3

Start with the papers. The warranty card should be stamped by the authorized retailer, and the reference should match the watch and the box. Check the display module against the reference, since the Type 3 has had updates over the years, including the oil-temperature gauge on current versions.

Look at the display with the watch running. The discs should move through their full cycle without catching, and the oil-filled display should look clear, with no fogging, cloudiness or oil on the outside of the crystal. Test the caseback controls, and ask the seller to show the winding and setting routine. A display that has been opened outside an authorized route is a reason to walk away, unless the seller can prove the work was done properly.

Ask for an independent report that covers the movement, the display and the seals. A report that doesn't mention the oil chamber is not a complete inspection for this model.

Choosing a specialist for an oil-filled display

A good specialist should explain how they will check the display module, the oil chamber and the seals before they quote. Ask whether they have worked on a magnetic-drive display, and how they handle the bellows and the oil during reassembly. A shop that treats the watch as a standard automatic is not the right choice for a complete service.

Ask the shop to confirm whether it is authorized, and what the warranty position is for any work it carries out. If the watch is out of warranty, ask for a written estimate that separates the movement, the case and the display work. Ask for the old parts back, and ask for the water-resistance result to be recorded.

The best sign of a good specialist is a clear explanation of what the display needs and what can wait. A watch that displays well and seals well is worth the care, and an honest plan from the shop is the best guarantee that the work is done properly.

What to check on a Type 3

Familiarity with the ROCS display, the oil chamber and magnetic drive
A check of seals, bellows and display movement at every overhaul
An authorized route for any work that may be covered by the warranty
A pre-owned inspection that includes the display, the caseback controls and the papers

Common questions

When was the Type 3 launched?

The Type 3 launched in 2013 and won the Horological Revelation prize at the Grand Prix d'Horlogerie de Genève that year.

What is the power reserve of the Type 3?

The brand rates the watch at 36 hours. It is wound and set through the caseback rather than a crown.

Does the Type 3 need special servicing?

Yes. The oil chamber, bellows and magnetic drive need checking, and the brand recommends an overhaul every three to five years at an authorized center.

What should I check on a pre-owned Type 3?

Check the papers and reference, watch the display run through its full cycle, look for fogging or cloudiness in the crystal, and test the caseback controls before you buy.