Serica 7505: history, models and owner reviews

Serica 7505 was launched in May 2026 as a compact field watch that captures the brand’s DNA: a dress-capable working watch built to take wear, yet drawn with enough character to stay elegant in daily life. The concept is explicitly “reduced format, intact vocation”: Ref. 7505 keeps the technical characteristics and presence of Ref. 6190 while becoming slimmer and better suited to smaller wrists. It is presented as a watertight chronometer, with a 35mm steel case opening, stated 20 ATM water resistance, a double-domed sapphire crystal with inner anti-reflective coating, and a Swiss automatic chronometer-certified movement. Its personality is completed by enamel dial options (including a new minute-driven layout) and a redesigned Bonklip bracelet fitted with a Safe-Lock clasp designed to add security without sacrificing comfort.

Design & readability: enamel dials and “Minute Critical” reading

Ref. 7505 comes in three enamel dial variations, and that material truly changes how the watch feels on the wrist: enamel delivers a denser, deeper surface that stays readable under artificial light without becoming so glossy that it distracts. The novelty targets people who use a field watch as a rhythm tool: the ‘Minute Critical Dial’ emphasizes the full 60-minute scale with a more direct, more assertive reading. In practice, this minute-first approach makes the watch more utilitarian in daily life: you time a commute, pace an appointment, check a schedule without starting anything—simply by reading the perimeter. It is a coherent approach for a compact watch: information must be clear, immediate, and effort-free.

Alongside this minute-oriented dial, the collection keeps a more signature proposition: the TXD, the brand’s tuxedo interpretation, built on contrast and structure rather than color. The common thread across variants is graphic discipline: ringed indices applied by hand on the tuxedo, crisp markers, and luminous material stated as Grade C3 so the watch remains consultable as the day ends. In real use, that coherence translates into comfort: you know where to look, and the watch does not “flare” unpredictably under office lighting. This is where enamel dials fully make sense: the surface serves legibility instead of complicating it.

Case, bracelet, and daily comfort: 35mm with no compromise

The case introduces a new silhouette within the collection: more compact yet more assertive, with curved lugs described as free of bevels, alternating finishes, and polished case flanks. The bezel keeps the wide brushed plateau idea, but it is punctuated with hemispheres that extend the dial’s cardinal markers, acting as visual rhythm points as much as stylistic cues. In use, this detail does more than look good: it helps orient the watch at a glance, especially when worn slightly loose. The numbers set the frame: 35mm opening, 9.6mm thickness (crystal included), and 41.5mm lug-to-lug. The promise is simple: reliability in 35mm, with true field-watch presence and modern-day ergonomics.

The professional intent is reinforced through concrete choices: stated 20 ATM water resistance places Ref. 7505 in a rare category for such a compact watch and supports peace of mind (rain, hand washing, active life) as long as normal mechanical-watch habits are respected. The sapphire crystal is double-domed with inner anti-reflective coating, stabilizing the read and reducing stray reflections—especially helpful on enamel. Lug width is stated at 20mm, giving room for strap changes if desired, even if the Bonklip remains the defining wear experience. Finally, the whole set-up aligns with the idea of wearing the bracelet a touch looser thanks to Safe-Lock: the watch is built to live, and 20 ATM water resistance supports that freedom rather than limiting it.

Movement: COSC chronometer as the brand's signature

Ref. 7505 is fitted with the Swiss automatic SoProd M100 movement, stated with 25 jewels, 28,800 vibrations per hour (4Hz), and a 42-hour power reserve. The key point is not the number but the framework: the watch is stated as chronometer-certified, aiming for controlled regularity and consistent daily behavior. On finishing, the brand mentions Côtes de Genève, which fits the idea of a utilitarian watch that is not crude. In real life, the value of this type of movement is staying simple: it sets easily, wears predictably, and supports a robust compact watch without fragile complications. That is exactly what SoProd M100 COSC implies: modern mechanics, regulated and framed, built for real use.

A 42-hour reserve is not a “long power reserve” claim, but it matches the rhythm of a field watch: you wear it through the week, take it off at night, pick it up in the morning, and the watch remains in a comfortable zone. If you rotate watches, you will sometimes reset the time, but the routine stays simple—and that simplicity is often what makes people wear a watch more: there is no friction. For servicing, the rule is the same as for any automatic, water-resistant watch: avoid unnecessary shocks, have water resistance checked if it sees a lot of water, and handle the crown calmly. The good news is the technical choices (4Hz, certification, water resistance) are oriented toward stability and peace of mind, and the 42-hour power reserve fits a daily-life logic rather than a display-case logic.

3 references for this new 7505 collection

Serica 7505 Enamel Black:

This version emphasizes full-minute reading through a “Minute Critical” dial in polished black enamel, designed to make the 60-minute scale more direct and more assertive. In real use, the polished black supports stable legibility: it strengthens contrast while keeping information hierarchy immediate, even on a small dial. The case keeps the stated compact format (35mm opening) and a controlled thickness for a highly water-resistant watch, making it very comfortable under a cuff. Stated 20 ATM water resistance and the double-domed sapphire with inner AR reinforce the “field” intent: you can wear it without overprotecting it, as long as normal mechanical habits are respected. This execution is also the most tool-like in spirit, because black plus a minute-driven scale orient the watch toward daily rhythm rather than pure visual effect. 

Serica 7505 Olive Green:

The same “Minute Critical” concept is expressed here in olive green, again in polished enamel, with the same aim: making the 60-minute reading more obvious and structurally central. In daily life, olive delivers a softer mood than black while keeping strong legibility thanks to clear markers and the stated luminous material. This version often has an everyday advantage: it keeps a natural field character—less strict than black—and pairs easily with lighter, warmer clothing. The compact case follows the new 7505 architecture, with a bold bezel presence despite the reduced format. The double-domed sapphire and inner AR stabilize the read, particularly helpful on enamel surfaces. This execution is ideal if you want a compact, highly functional watch that feels less “black instrument.

Serica 7505 TXD:

The TXD dial completes the collection with the brand’s tuxedo interpretation: a bi-tone contrast layout, ringed indices applied by hand, and a more dressy aesthetic that still stays faithful to field codes. In real use, it is the most mixed-purpose variant: it works at the office and on weekends because it keeps the tool side (readability, crisp markers) while adding a more graphic presence. The compact case keeps the stated specs: 35mm opening, controlled thickness (crystal included), and stated 20 ATM water resistance that supports confident daily wear. The double-domed sapphire with inner AR helps preserve the advantage of contrast on a bi-tone dial. This is also the version that most strongly highlights the Bonklip bracelet, because the overall feel becomes very “designed utility” without looking forced. 

This new collection 7505 launches a fully redesigned Bonklip bracelet, and this evolution is central to the wearing experience: curved end pieces for better integration, rectangular polished attachments, and center links stated at 16mm. The goal is twofold: improve comfort on a smaller wrist and enhance stability, because a field watch is easier to read when it does not rotate. The new Safe-Lock clasp adds extra security while allowing the bracelet to be worn slightly loose, which directly answers real life: wrists swell, you move, you shift between indoor and outdoor conditions, and an overly tight watch quickly becomes annoying. The bracelet is stated as available in three lengths (short, standard, extra-long), which avoids the one-size compromise. This attention to the bracelet aligns with the “watertight chronometer” vocation: robustness is not only in the case; it is in how the watch wears. 

The Serica 7505 TXD as seen in watch media

While waiting for the first owner reviews on Dialicious, here are a few impressions published by specialist media when the Serica 7505 TXD was launched.

Monochrome Watches - “35mm of Genuine Ruggedness...” Read the article
Hodinkee - “Serica Downsizes Its Field Chronometer With The 35mm Ref. 7505...” Read the article

 

Conclusion

Serica 7505 is a compact field watch that embraces a true professional vocation: high water resistance, sapphire crystal, a chronometer-certified automatic movement, and a case/bracelet architecture designed for real-life wear. Its appeal is delivering a reduced format without reducing presence, thanks to a more assertive new case and a redesigned Bonklip with Safe-Lock. Your choice will mainly come down to the dial (Minute Critical for minute-driven use, TXD for dressy contrast) and to how you like to wear your watch (snug or slightly loose).

To compare this overview with real ownership experience and long-term wear feedback, consult Dialicious customer reviews.

(Updated May 2026)