Founded in 2023, Sero Watch Company is a Netherlands-based brand, run by friends and business partners, Sergino and Robert. The name Sero is a portmanteauof the founder’s first names and is supposed to symbolise unity, passion, and purpose.
Whilst Sergino and Robert only met in recent years, their watch journeys began when they were children and both cite their fathers as sparking their initial interest. As they matured Sergino and Robert’s appreciation for timeless design, classical proportions and mechanical movements grew and they found themselves particularly drawn to watches of the 1930s-1960s. Perhaps it was inevitable then that this shared passion led them to set up their own watch company, driven by the desire to create timeless watches that look, feel and wear like the vintage pieces that inspire them, but built to exacting modern standards. First and foremost, Sergino and Robert identify as enthusiasts and collectors, and their creations are aimed to appeal to fellow enthusiasts, rather than the mass market. So, does their debut release, the Signature, live up to the brand owners’ ambition?
Collection Overview
Sero’s debut Signature collection is inspired by classic dress watches from various prestigious makers during the 1930s-1960s. As well as featuring the classic Breguet numerals common of the era, the handset of the Signature is particularly reminiscent of the Patek Philippe Calatravone reference 570 from the 1940s. However, although the Signature is inspired by vintage watches, it doesn’t copy a specific reference and is not merely a homage. Plus, of course, you get the benefit of modern specs!
The collection comprises four variants, all featuring a Swiss manually wound movement. The only thing that differentiates them is the dial colour. Everything else is the same across all four models. Backers can choose from Silver, Gold, Red or Blue as reviewed here. If you’re one of the first 150 people to back the watch, you’ll secure the best price at €899 (approx. £790 GBP). Subsequent pre-orders will be €999, and the full retail price will be €1,199 which kicks in once the pre-order window has closed. The warranty period is 12 months and watches will be available to buy directly from the brand’s website on 29 March 2026. Payment is required in full and watches are expected to be delivered within six months.Although designed in the Netherlands,refreshingly, Sero Watch Company is completely transparent about the factthe Signature collection is manufactured and assembled in Hong Kong and paired with handcrafted exotic leather straps from Vietnam.
The Case and Wearing Experience
The stainless steel case has a diameter of 37.5mm, with a lug-to-lug of 46.5mm, which for most people is in the sweet spot for a dress watch. And thankfully, as is befitting of such a classy watch, the case is thin at just 9.5mm including the sapphire crystal (8.7mm excluding), achievable in part due to the use of a manually wound calibre. If you’ve got larger wrists though, don’t be put off by the on-paper specs, as the watch looks a little larger on the wrist than the dimensions would suggest as it’s all dial, and the simple but elegant lugs are proportionately long in relation to the case diameter.
The three-part case design is well-executed, but simple and traditional, no surprises here. A polished, gently sloping, slim bezel surrounds the sapphire crystal and has vertical sides, nicely defined by a thin, polished chamfer.
The sapphire crystal has an internal anti-reflective coating and is domed, but it’s so slight it’s barely perceivable. The mid-section profile is gently arched and thins out as it meets the rounded lugs, which have polished top surfaces. The mid-case and lugs have horizontally brushed sides, but there is vertical brushing between the lugs.
A delightful touch is the ‘Sero Watch Company, Netherlands’ engraving between the lugs on the six o’clock side of the case, which you get a glimpse of when looking at the watch on your wrist.
The caseback is secured with six screws, has a polished perimeter and is engraved with specifications and the brand name. Surprisingly, water resistance is 10ATM/100m, despite only having a push-pull crown, which is reassuring and relatively uncommon for a dress watch. The 6.5mm crown has a simple coin edge appropriate to the era. It’s easy to grip and is embossed with the brand’s stylised ‘S’ on the face. A sapphire crystal exhibition window allows full view of the very attractive, manually wound movement.
At the point of ordering, you can choose from any one of the plentiful strap options. The pick of the bunch for me is the wonderfully supple, genuine ostrich-leg leather straps which are handcrafted in Vietnam and scream ‘quality’. They are available in a choice of colours: Cognac, Green, Grey, Black, Blue, Brown. Alternatively, Epsom leather straps make for a more understated choice, or there is a wonderfully fluid beads-of-rice stainless steel bracelet. The straight end links of the bracelet might be a bit jarring for some, but it is totally era appropriate. Sero has said that production bracelets will include a much slimmer, period-correct folding clasp, which is a very worthwhile improvement. The buckles used for the leather straps will also be more contoured to better follow the curve of the wrist (although to be honest I thought the existing one was already fine). Lug width on the Signature is 20mm, so it’ll also be easy to find alternative aftermarket straps.
Sero Watch Company also get a round of applause from me for offering a choice of sizes in the leather straps, something I wish more brands did! You can choose between Small (105mm/70mm) medium (115mm/75mm) or large (125mm/80mm).
Although simple, the case appears to be flawlessly executed. And to be honest, on a watch like the Signature, the case doesn’t need to be complex. It’s understated and lets the dial do the talking, which is just the way it should be!
The Sero Signature Movement
The Signature uses the venerable and reliable Sellita SW210-1b manually wound Swiss-made mechanical movement, which has 18 jewels, a 45-hour power reserve and beats at 28,600 vph / 4Hz. Sero has opted for the Elaboré grade which brings improved accuracy over the standard grade. It’s tested to three positions (CH – horizontal, dial up), 6H (vertical, six o’clock up) and 9H (vertical, nine o’clock up) with a middle rate of +/-7 seconds per day and a maximum divergence of +/-20s.
As the Signature features an exhibition case back, it’s a thoughtful touch that Sero has opted for ‘D4’ level of finishing, which is the highest level of decoration without customising. Whilst it’s not going to set the world alight (what movement does at this price?!), it’s certainly very attractive and features blued screws, cotes de Geneve stripes on bridges, perlage on the main plate and snailed crown-wheel, ratchet and barrel.
Production watches will also feature gilt engravings, including the Sero logo, and ‘Swiss Made’ designation.
The Dial and Handset
For me, this is where the Signature really shines. The dial is drop-dead gorgeous! I just love, love, love the deeply engraved Breguet style numerals which are electroplated in black. So classy, so artisan. And it must be said, an uncommon sight, especially at this price point. The chiselled numbers are very dynamic and take on different tonal qualities depending on the direction and strength of light. Most of the time they have quite a warm, metallic, gunmetal appearance, rather than black, which is a good thing as it adds dynamism to the dial. The depth of the engraving is epic and when the light hits the dial just right, the sharply defined contours come alive. The black electroplating is also impeccably neat and consistent.
And then we come to equally exquisite thermally blued, sculpted and polished handset which is almost identical to that of the Patek Philippe ref: 570 from the 1940s, which incidentally was also 37mm (slightly ‘oversized’ in its day). The spade-shaped hour hand is creased down the middle and terminates at a fine point, and the long, elegant minute hand twists and turns, dancing with the light to display the perfect shade of blue. The slim needle seconds hand skims over the minute track and has a round skeletonised counterbalance. I’ve reviewed or owned several watches with blued hands before, and I have to say a lot of the time the blue is barely visible unless the angle of light hits the dial just right, but on the Signature the blue is eager to show itself off, which is nice.
The vertical brushing on the metallic dial helps the numerals and hands stand out more and aid clarity and legibility too. I do wonder if a slightly finer brushing would make the dial feel even more premium, but I’m only talking incremental refinements. On my prototype watch, a simple printed minute track comprises larger circles for five-minute markers and smaller dots for the rest. However, Sero has confirmed that production watches will have an engraved minute track, which is fantastic as it will make an already great dial even better. I do love it when brands continue to make minor improvements right up to the launch!
‘Sero Watch Company’ is pad printed in a black italic serif font above the pinion at 12 o’clock, with Netherlands proudly printed beneath. Below the pinion, above the 6 o’clock marker, ‘Signature’ is engraved. The ‘signature’ engraving will be finer for production watches and rendered in gunmetal rather than deep black to make it less prominent. To be honest, I’m not even sure it needs to be as it looked great ‘as-is’ on my review watch.
Daytime legibility is excellent thanks to the combination of internal anti-reflective coating on sapphire, and high contrast between the engraved numerals and brushed dial. There is no lume anywhere, which is as it should be for a watch like this.
Whilst of course the Signature is not comparable in quality to the likes of Patek, the engraved Breguet numerals and high-end handset do make the watch feel really special. Glancing down at your wrist, it doesn’t take too much of a leap of imagination or squint of your eyes to believe you’re looking at a watch from one of the luxury makers that were its inspiration.
Final Thoughts
I love it when I get to review debut releases as it gives me (and our readers) an insight into a brand’s direction of travel and ambition, a starting point from which we will hopefully get to see the brand grow. And when a debut release is as good as the Sero Signature, in a funny sort of way it’s also an opportunity for enthusiasts, as the likelihood is that future releases will only improve…and get more expensive in the process. The debut release offers a chance to grab a watch before the brand gathers so much momentum that they either become a ‘waiting list’ company, or begin flexing into the next price bracket.
The Sero Signature is not cheap for a first watch from a new microbrand, but when you consider what it offers, the value is certainly there provided you’re ok with paying in full up front and waiting months for the watch to arrive. Is it perfect? Well, not quite, but I really had to put my little grey cells to work to find the negatives. The main negative is that the 12-month warranty falls short of most brands at this price point. Also, I feel a watch like the Signature deserves to have a ‘Top’ or ‘Chronomètre’ grade movement for improved accuracy, or at least have the option at additional cost. Likewise, a deployant clasp on the otherwise excellent quality straps would elevate it further. These minor criticisms aside though, it doesn’t really have much in the way of direct competition at the launch price. If you’re after a classy, timeless and well-proportioned dress watch with the sublime combination of deeply engraved Breguet-style numerals, complex thermally-blued handset and decorated Swiss movement you’ll quickly discover you’ll have a very short shortlist! There’s the cheaper Knis Koku, but that comes with an undecorated and less accurate Japanese automatic movement and much less unique handset. The closest mainstream competitor is the Longines Master Collection which retails for £2350, more than double that of the Sero and it’s arguably less attractive. The Longines also has a slower beat rate (25,200 in the Longines, vs 28,600 for the Sero) and less water resistance than the Sero. Not that you buy a watch like this for the water resistance, but the Signature’s 100m is certainly a nice to have. From there, you go to truly high-end artisan Japanese brands such as Naoya Hida, which price-wise is multiples of ten or more! Suffice to say, any of these options makes the Sero look like a compelling option, especially at the launch price of €850. It oozes class and gives you a sense of what it would be like to own one of the iconic references from one of the holy trinity brands, but without the ownership costs and vintage concerns. Minor improvements and refinements could make the Signature MK2 a truly unbeatable product it its class and price point.
