Trematic Watch Co. ZY6: what does its owner think?

The Trematic Watch Co. ZY6, commercially launched in 2024, is the watch that marked Trematic’s return to the watch market after several decades of absence. The brand, active in Geneva during the 1950s and 1960s before disappearing in the context of the Quartz Crisis, was acquired in 2022 by Daniele Campagnano with the objective of reviving its heritage through a contemporary approach. The ZY6 directly translates this philosophy: rather than reproducing one precise historical reference, it brings together different codes from mid-twentieth-century Swiss watches in a format suited to current use.

Its 38 mm stainless-steel case, three-level dial, applied wedge-shaped hour markers, dauphine hands and domed sapphire crystal evoke the 1950s and 1960s. A screw-down crown, 100 metres of water resistance, C3 Super-LumiNova and an automatic Sellita SW200-1 movement provide modern practical characteristics. The ZY6 is therefore deliberately positioned between a dress watch and a field watch, with enough elegance to accompany formal clothing but a sufficiently robust construction for everyday wear.

Design & legibility: a neo-vintage aesthetic built in depth

The dial is probably the most characteristic element of the ZY6. Trematic does not simply use one uniformly printed surface: its construction employs three levels, with a rough or sandblasted base, a differently finished circular ring and applied wedge-shaped hour markers. This layering changes the appearance according to the angle of the light and allows the different colours in the collection to develop very distinct personalities despite an identical architecture. A peripheral railroad minute track facilitates precise reading, while a date aperture is positioned at 3 o’clock. The dauphine-shaped hands reinforce the 1950s inspiration and receive luminous material, as do the hour markers. The combination of a traditional dress-watch dial and C3 Super-LumiNova particularly well summarises the intention to bring together vintage aesthetics and contemporary use. Night-time legibility is consequently significantly better than on a genuine vintage dress watch. The domed sapphire crystal increases the impression of dial depth while receiving anti-reflective treatment on its internal and external surfaces. Ossidiana, Persiano, Sacramento, Borgogna, Antico, Avorio and Tortora use colour as their principal element of differentiation.

Case, straps and comfort: 38 mm designed for everyday use

The round case measures 38 mm in diameter excluding the crown, 44 mm from lug tip to lug tip and 11.1 mm thick including the domed sapphire crystal. These dimensions place the ZY6 in a particularly versatile middle ground: it has more presence than a small 34 or 35 mm vintage dress watch but is significantly less cumbersome than many modern sports watches measuring 40 to 42 mm. The 316L stainless steel alternates brushed surfaces with polished elements in order to highlight the curves of the case. Lug width is 20 mm, a very common measurement that facilitates strap changes. The 44 mm length combined with the 38 mm diameter gives the ZY6 proportions suited to medium as well as smaller wrists. The screw-down crown and case construction provide stated water resistance of 100 metres, versatile enough for everyday life and swimming when the watch is correctly maintained. Trematic offers quick-release straps made from plant-based material together with a metal bracelet produced in collaboration with Forstner. The closed caseback features a coin-edge-style perimeter and carries the historical Trematic anchor, a symbol taken from the brand’s earlier production.

Movement: the Sellita SW200-1 as a straightforward choice

The ZY6 is powered by the Sellita SW200-1, a Swiss automatic mechanical movement widely used throughout the watch industry. It operates at 28,800 vibrations per hour, or 4 Hz, uses 26 jewels and provides a stated power reserve of 41 hours. It controls the hours, minutes, central seconds and date. The oscillating weight automatically winds the mainspring through wrist movement, while the calibre can also be manually wound through the crown after it has stopped. The choice of the SW200-1 favours a familiar and serviceable architecture rather than the pursuit of an exclusive movement. For a small brand revived relatively recently, this can be valuable over the long term because many watchmakers are familiar with this mechanical family and have substantial experience servicing it. The 41-hour reserve is nevertheless shorter than that of many recent automatic calibres: a ZY6 removed on Friday evening will generally have stopped before Monday morning. Its 4 Hz frequency gives the seconds hand a visually smooth progression. Individual accuracy depends on movement regulation and wearing conditions; Trematic does not communicate a general chronometer certification for the ZY6. Servicing can be considered when rate becomes irregular or performance deteriorates without requiring one universal fixed interval.

Chronological milestones and main models (2024–2025)

(2024) Trematic ZY6 Ossidiana Black:

The Ossidiana version represents the most understated and probably the most versatile interpretation of the ZY6. The Trematic ZY6 1321121 combines a black and grey dial with the three-level construction characteristic of the collection. The textured base, circular ring and wedge-shaped markers provide enough relief to avoid the flat appearance that could result from a simple black dial. Dauphine hands and hour markers receive C3 Super-LumiNova, while the date aperture remains positioned at 3 o’clock. The 316L stainless-steel case measures 38 mm in diameter, 44 mm long and 11.1 mm thick including the domed sapphire crystal. The screw-down crown contributes to the 100 metres of water resistance. The automatic Sellita SW200-1 provides 41 hours of power reserve. On a dark plant-based strap, the overall appearance remains close to that of a sporty dress watch; on the Forstner steel bracelet, its wrist presence becomes stronger and more oriented towards everyday sports-watch use.

(2024) Trematic ZY6 Antico Pink:

The Antico variation uses a pink dial that gives the watch a much more expressive personality while retaining exactly the same proportions as the other ZY6 models. The Trematic ZY6 1327124 remains built around the 38 mm 316L stainless-steel case, with a 44 mm lug-to-lug length, 11.1 mm thickness, domed sapphire crystal and screw-down crown. Its dial combines the pink colour with several concentric finishes: a matte central texture, a differently treated circular ring and applied markers. This treatment prevents the colour from appearing as a simple uniform surface. Luminous hands and markers provide low-light reading, an unusual characteristic on a watch with such a dress-oriented aesthetic. The date is displayed at 3 o’clock. Inside, the automatic Sellita SW200-1 runs at 4 Hz and provides approximately 41 hours of power reserve. A grey plant-based strap tones down the colour of the dial, while the Forstner steel option gives the watch a sportier appearance less directly associated with a conventional dress watch.

(2024) Trematic ZY6 Persiano Blue:

The Persiano dial is built around a deep blue whose texture becomes particularly apparent as light moves across its different levels. The Trematic ZY6 1325125 uses the same 38 mm 316L stainless-steel case, with a length of only 44 mm that contributes to comfort on small and medium wrists. The central area has a subtly granular appearance, while the circular ring and applied markers produce sharper reflections. A peripheral railroad track allows precise reading of the minutes and the date aperture occupies the 3 o’clock position. Dauphine-style hands and markers contain C3 Super-LumiNova. The domed sapphire crystal receives internal and external anti-reflective treatment. The automatic Sellita SW200-1 operates at 28,800 vibrations per hour and provides 41 hours of reserve. With 100 metres of water resistance and a screw-down crown, the Persiano can be used far beyond the environment of a traditional dress watch, while its blue dial works easily with office clothing or a more casual wardrobe.

(2024) Trematic ZY6 Sacramento Green:

The Sacramento is the green variation in the collection and strengthens the intermediate character between dress watch and field watch claimed by Trematic. The Trematic ZY6 1326127 has a deep green dial whose different surfaces create changing tones rather than one uniform colour. Applied wedge-shaped hour markers retain a mid-twentieth-century inspiration, while the use of C3 Super-LumiNova gives them a much more functional dimension. The 316L stainless-steel case measures 38 mm in diameter, 44 mm long and 11.1 mm thick including the crystal. The 20 mm lug width makes it easy to use a broad selection of straps. The sapphire crystal is domed and anti-reflective treated, the crown screws down and water resistance reaches 100 metres. The automatic Sellita SW200-1 controls hours, minutes, seconds and date with approximately 41 hours of power reserve. The Sacramento works particularly well on a green plant-based strap to strengthen its personality, but the Forstner metal bracelet can transform it into a more neutral watch suitable for everyday use throughout the year.

(2024) Trematic ZY6 Borgogna Burgundy:

With its red-burgundy tone, the Borgogna places greater emphasis on warmth and dress-watch character. The Trematic ZY6 1328126 nevertheless retains all the technical specifications of the other variations: 38 mm 316L stainless-steel case, 44 mm length, 11.1 mm thickness, anti-reflective domed sapphire crystal, screw-down crown and 100 metres of water resistance. The three-layer dial construction allows the red colour to vary according to the orientation of the watch, with a textured central section, a ring featuring circular reflections and applied hour markers. Dauphine hands and luminous markers maintain straightforward reading despite the strong colour. The date appears at 3 o’clock. The automatic Sellita SW200-1 provides approximately 41 hours of power reserve and operates at a frequency of 4 Hz. A burgundy plant-based strap can create a strongly coordinated presentation, while the steel configuration reduces the overall colour effect. This variation is particularly suitable for someone wanting an original 38 mm watch without adopting the dimensions or complexity of a more demonstrative sports watch.

(2024) Trematic ZY6 Avorio Ivory:

The ZY6 Avorio uses a light tone between off-white and ivory that is particularly consistent with the inspiration of dress watches from the 1950s and 1960s. The Trematic ZY6 1322128 combines this colour with the collection’s usual three-level dial construction, allowing the textured central zone, circularly finished outer ring and applied markers to remain clearly differentiated. Hands and hour markers receive luminous material to preserve practical reading as ambient light decreases. The date is positioned at 3 o’clock. Its 38 mm 316L stainless-steel case combines brushed and polished surfaces, while the domed sapphire crystal creates a profile closer to that of an old acrylic crystal without reproducing its vulnerability to scratches. The 44 mm length and 11.1 mm thickness keep overall dimensions restrained. The screw-down crown provides 100 metres of water resistance. The automatic Sellita SW200-1 delivers approximately 41 hours of power reserve. On a brown plant-based strap, the Avorio takes on a very classical appearance; the Forstner steel bracelet gives it a sportier expression.

(2024) Trematic ZY6 Tortora Taupe:

The Tortora offers a grey-beige or taupe tone deliberately positioned between the lighter and darker colours of the range. The Trematic ZY6 1329121 retains the multi-finish dial with a textured central section, circular ring, peripheral railroad track and applied wedge-shaped hour markers. This relatively neutral colour allows the construction details to remain visible without attracting as much attention as Antico, Sacramento or Borgogna. Dauphine hands and luminous hour markers provide night-time readability, while the date sits at 3 o’clock. The 38 mm case is made from 316L stainless steel and measures 44 mm long and 11.1 mm thick. The crystal is domed sapphire with anti-reflective treatment, the crown screws down and stated water resistance reaches 100 metres. The Sellita SW200-1 provides 41 hours of autonomy. On a grey or beige plant-based strap, Tortora emphasises its relaxed dress character; on the Forstner steel bracelet, it becomes closer to a versatile sports watch.

Choosing the right version: size, colours, straps and use

The 38 mm diameter is probably one of the main attractions of the ZY6. It suits the vintage inspiration without reproducing the very small dimensions of certain 1950s watches. On a small or medium wrist, the 44 mm length allows the lugs to remain comfortably within the wrist. On a larger wrist, the dial occupies a significant proportion of the case and prevents the watch from appearing excessively small. The 11.1 mm thickness remains compatible with fitting beneath most sleeves.

For a first ZY6 intended to work with many different outfits, Ossidiana, Tortora and Avorio are the easiest variations to combine. Persiano provides more colour while remaining sufficiently classical for office use. Antico, Sacramento and Borgogna are more interesting if the objective is to add an unusual colour to a collection already dominated by black, blue or white dials. Since the mechanical specifications are identical, the decision can genuinely be made according to aesthetic preference.

The plant-based strap is relevant for preserving the light and elegant character of the watch. It uses a quick-release system and makes it easy to change its appearance. The metal bracelet developed with Forstner increases the sensation of solidity and moves the ZY6 closer to an everyday sports watch. The standard 20 mm lug width also opens an extremely broad choice of third-party straps. Conventional leather can strengthen the vintage inspiration, textile can move it towards the field-watch category and a water-resistant flexible strap can better accompany summer use.

With a screw-down crown and 100 metres of water resistance, the ZY6 is more versatile than a traditional dress watch. It can handle ordinary everyday conditions and swimming if its water resistance has been correctly checked. It is nevertheless not designed as a genuine dive watch: there is no rotating bezel for measuring immersion time and no architecture specifically intended for intensive underwater use. Its natural environment is therefore everyday wear combining office, travel, leisure and moderately active situations.

Finally, the 41-hour power reserve deserves consideration for someone who owns several watches. Worn every day, the ZY6 will naturally remain wound through its automatic rotor. Within a broader rotation, however, it can stop after less than two days without wear. The SW200-1 is therefore particularly well suited to a watch worn regularly rather than one left in a box for several days at a time. Resetting the time and date is straightforward, and manual winding quickly restarts the movement. Other customers’ opinions are essential.

Conclusion

The Trematic Watch Co. ZY6 is aimed at enthusiasts who appreciate the proportions and details of mid-twentieth-century Swiss watches but want to avoid the constraints of a genuine vintage piece. Its 38 mm case, multi-level dial, wedge-shaped markers and dauphine hands give it a classical identity, while sapphire crystal, screw-down crown, 100 metres of water resistance and Super-LumiNova make it considerably easier to use every day. Seven colours allow a choice between restraint and personality without changing the mechanical foundation. The plant-based strap prioritises lightness and elegance, while the Forstner bracelet strengthens the sporting character. The Sellita’s power reserve is modest compared with recent movements, but its proven architecture represents a pragmatic choice.

To understand how these specifications translate into real comfort, accuracy, finishing and wrist enjoyment, Dialicious customer reviews provide a useful complement to the technical specifications.

(Updated August 2026)