Monochrome Watches
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The Delma Quattro Limited Edition Is A Legitimate Tool For Decompression Diving

A versatile saturation diver with a specialised decompression plate and several dial colours.

| By Erik Slaven | 3 min read |

Delma has been an independent and family-owned Swiss brand since 1924. It launched its first dive watch in 1969, the Periscope, which was followed by a bona fide professional diver in 1975, the Shell Star. Delma has been committed to both improving and expanding its underwater portfolio for decades, and the new limited-edition Quattro is a testament to that. Two strap options, several dial colours and a special decompression plate that can hold the watch case elevate this professional diver above the norm.

The stainless steel case is on the larger side at 44mm in diameter and 15.3mm in height, but the size is ideal for a pro diver. Water resistance is rated at 500 metres, and there’s a requisite helium escape valve on the left side. The unidirectional rotating bezel has six prominent notches instead of traditional knurling, giving it a more robust aesthetic. The diver’s scale is available in plain steel or black DLC, and all markers are coated with Super-LumiNova C5. The screw-down crown isn’t protected by guards but recessed into the case itself. It can be unscrewed by a provided tool or even a coin or by hand when removed from the watch head (more on that below). To detach the case, a lever on the left side at 8 o’clock is pulled up and then turned to 9 o’clock. The opposite is done to return it, inserting the case with the lever at 9 o’clock and turning it counterclockwise to 8 o’clock. It clicks firmly into place.

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The reason to remove the case from the watch head is to utilise a specialized decompression plate. Known as the Rapid Bracelet Exchange System (RBES), this bayonet mount is similar to changing lenses on an SLR camera and can be performed in all conditions. The aluminium decompression plate features a detailed chart underneath the mounted watch case. The tables are based on the research of Hannes Keller and Albert Bühlmann and designed for multiple decompression stops with altitude considered. There are two sets of data on the plate – one for diving in the mountains at 700 meters above sea level (MASL) or higher and one below 700 MASL. The plate has a spring snap hook and can easily be attached to an oxygen tank or other equipment. A rubber strap or three-link steel bracelet with a safety deployant clasp can also be changed without tools via Delma’s RBES.

The dial comes in black, blue or orange, and all have the option of the steel or black DLC bezel. The minute and lollipop seconds hands are orange, while the hour hand is white for contrast and separation. All hands have Super-LumiNova inserts, as do the applied round and oval indices. A date window sits at 3 o’clock and is black on the black dial (white on the other two). Legibility is excellent, as expected for a pro diver.

Powering the Delma Quattro limited edition is a Sellita SW200-1 automatic (ETA 2824 alternative). This Swiss workhorse has 26 jewels, beats at 28,800vph (4Hz) and comes with a 38-hour power reserve. Functions include central hours, minutes, hacking seconds and date. Although the watch has a 500-metre depth rating, there’s surprisingly an exhibition caseback. The movement is undecorated but features a nice gold (coloured) rotor.

The Delma Quattro is limited to 999 pieces and comes in a custom box to store the watch, strap and decompression plate. A special blue leather pouch is also included. It retails for CHF 1,990, EUR 2,090 or USD 2,390, which isn’t bad at all for a pro diver with unique features and custom accessories. For more information, please visit Delma’s website.

11 responses

  1. 999 pieces limited edition. Why not make an even 1000 pieces? Sellita Sw200 movement. Wow!!! Seems like you report on more limited rather than standard edition watches. Seems like there are now more limited edition watches on sale the standard.

  2. Cierto, el filón de las seudo-ediciones limitadas está siendo sobreexplotado, las verdaderas ediciones limitadas siguen siendo como las marcas que las pueden ofrecer: escasas, exclusivas, y de buen saber hacer.

    ¡Imponente bisel!

  3. Doing some research, I found something shady. It seems that Delma copied the original design of the “Aquarama”. An innovative quartz diver from the 70s from the Wyler-Vetta brand. Today it is a highly valued vintage.

  4. Investigando un poco, hallé algo turbio. Parece que los de Delma fusilaron sin misericordia el diseño original del “Aquarama”. Un innovador diver cuarzo de los años 70 de la marca Wyler-Vetta. A dia de hoy es un vintage bastante buscado por conocedores. Para ser justo, si lo hicieron legalmente en tema patentes, la verdad es que el antiguo Aquarama fué un adelantado a su tiempo, merecía una iteración moderna con movimiento mecánico, y les ha quedado de película !!!

  5. Dear Cuentatiempos, Thank you for your comment. The original DELMA Quattro had been developed in collaboration with SDW (Swiss Divers Watches) as a quartz divers’ watch. The model was then sold to other brands beyond DELMA and SDW. That’s why today, you can find several models that look very similar / identical to the original DELMA Quattro beyond the different brand name on the dial. I hope that helps.

  6. Thanks for answering Andreas Leibundgut, I keep seeing history cloudy, according to your page, the Quattro Quartz Original was released in the early 1980s. The Wyler-Vetta reports earlier dates on all the sites that talk about their watch.


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