BHD 12,900.000

TYPE 5 is the first mechanical watch to be perfectly readable underwater regardless of the viewing angle. UNLOCK the GENTLEMAN DIVER in you.


As for all RESSENCE watches the essence of TYPE 5 is its main function - the expression of Time. To achieve the best-ever readability underwater, the complete ROCS 5 - all 142 components, including the dial - is immersed in 37.5 ml of oil. Indeed the use of oil has one ultimate advantage. It cancels out what is known as Total Internal Reflection. Typically, under water, a traditional diver’s watch needs to be viewed straight on in order to be read properly - otherwise refraction turns the glass into a mirror. But not with the oil-filled TYPE 5 . The use of oil ensures complete legibility whatever the angle of view. A first for a mechanical watch.

Rather than protecting the TYPE 5 against the pressure of water depth by using a heavy over-sized case and thick glasses, we used our oil technology. Since the laws of hydraulics state that a liquid cannot be compressed, the oil will compensate for underwater pressure. TYPE 5 benefits therefore from a super lightweight titanium construction. Moreover there are other advantages related to the oil technology. The components are constantly lubricated and since they are suspended in liquid, they are lighter and hence require less power to move, which in turn improves accurate time-keeping.


Price shown is excluding VAT
Please note that due to varying lighting and device display settings, the colors of products in photos may slightly differ from their actual appearance.


The Type 5 is another example of the Ressence engineering prowess. Fixing an issue that can plague all divers watches where reflections off the sapphire crystal can cause issues with reading the time underwater. The use of filling the watch with oil, which stops refraction and enables the wearer to view the time at any angle on dry land or in the water.


Model: TYPE 5 BB Black Black

Functions: Hours, Minutes, Runner (90 Seconds)

Material: Grade 5 Titanium Black DLC

Caseback: Grade 5 Titanium Black DLC

Glass: Two separate sealed chambers with the upper one filled with 37.5 ml of oil. Domed sapphire crystals top and bottom with both sides anti-reflective coating

Dimensions: Diameter 46mm, Depth 15.5mm

Dial: Convex Grade 5 Titanium dial (125mm radius) with three eccentric biaxial satellites inclined at 3° (hours) and 4.75° (thermal gauge and runner)
Engraved indications. Uni-directional bezel

Lume: Yes

Caliber: Patented ROCS 5 - Ressence Orbital Convex System - module driven by the minute axle of a customised 2824/2 base calibre. Automatic with caseback winding and time setting with RCLS – Ressence Compression Lock System, Magnetic Transmission, Compensating Bellow System

Power Reserve: 36 Hours

Water Resistance: 10 ATM

Bracelet/Strap: Black Barenia leather + Black Nylon fabric, Ardillon Buckle

Manufactured: Designed in Belgium, made in Switzerland