The Sellita SW200-1 is one of the most widely used automatic movements in Swiss watchmaking. Hundreds of brands rely on it. It powers watches from €400 to well over €2,000. It is the movement inside both the SOREN Momentis and the SOREN Oceanic.
In early 2026, Sellita announced the SW200-2 Power+. This is not a cosmetic update. Sellita re-engineered significant parts of the movement to increase the power reserve from 38 hours to 65 hours while retaining the same dimensions and the same 28,800 bph frequency. This article explains what changed, why it matters, and what it means for buyers.
What the SW200-1 Was
Before covering the upgrade, it helps to understand what made the SW200-1 so dominant. For a full overview of the calibre, the SOREN Sellita SW200 movement guide covers it in detail.
The short version: Sellita launched as a manufacturer when ETA, which is owned by the Swatch Group, began restricting movement sales to brands outside the group from 2003 onwards. Sellita filled the gap. The SW200-1, introduced in 2008, became the industry's go-to workhorse for Swiss Made automatic watches. It runs at 28,800 bph (4 Hz), offers 38 to 41 hours of power reserve, hacks and hand-winds, and has a reputation for reliability and easy servicing. It is functionally equivalent to the ETA 2824-2, which is the calibre used across watches that cost two to three times as much as watches powered by the SW200-1.
As of 2024, Sellita produces around 800,000 SW200-1 movements per year. That is roughly half of the company's total production.
What Changed in the SW200-2 Power+
Sellita announced the SW200-2 Power+ officially on 2 February 2026. The movement will gradually replace the SW200-1 during a transition period, with both calibres available in parallel while existing brands and production runs work through the changeover.
The headline number is 65 hours of power reserve. But the upgrade is deeper than a stronger mainspring. Sellita re-engineered multiple components to reach that number without the trade-off that Tissot's Powermatic 80 made.
New barrel. The barrel has been redesigned in both geometry and mainspring specification. The spring has more coils, which increases energy storage capacity. This is the primary source of the additional power reserve.
New gear train. The tooth geometry has been optimised for more efficient energy transfer throughout the movement. The wheels are also manufactured in a different colour finish compared to the SW200-1, which makes them easy to identify during after-sales servicing.
Improved automatic winding system. A longer power reserve is only useful if the movement can reliably reach it during normal wear. Sellita upgraded the winding system to ensure the increased reserve is consistently achievable.
New regulating organ. The balance wheel's moment of inertia has been reduced from 16 to 8 mg per square centimetre. This improves stability and rate consistency. Critically, the frequency remains at 28,800 bph.
Revised fine adjustment system. Enhances regulation precision for improved long-term accuracy.
New Incabloc shock protection. Updated shock absorber on the balance staff for better resistance to impacts during daily wear.
Most components are not interchangeable between the SW200-1 and SW200-2. The date mechanism and keyless work are exceptions. This matters for servicing: a watchmaker working on an SW200-2 needs to source SW200-2 specific parts.
The Key Decision: Keeping 28,800 bph
This is the most technically significant aspect of the SW200-2 upgrade, and the one that separates it most clearly from its main rival.
ETA's Powermatic 80, which is available to Swatch Group brands like Tissot and Longines, achieves its 80-hour power reserve partly by reducing the frequency to 21,600 bph (3 Hz). That lower frequency is why the Tissot PRX Powermatic 80 has a slightly less fluid seconds sweep than a 28,800 bph movement.
Sellita deliberately kept the SW200-2 at 28,800 bph. According to Sellita's Head of Innovation and Marketing, the company chose not to reduce frequency to achieve longer power reserve because higher frequency offers advantages in rate stability and precision, particularly in the context of COSC chronometer certification. A movement running at 28,800 bph tolerates positional errors better than one running at 21,600 bph.
The result is a movement with 65 hours of power reserve and a smooth, fluid seconds sweep. That combination did not previously exist at this price level.
What 65 Hours Means in Practice
The SW200-1's 38 to 41 hours of power reserve means that if you take the watch off on Friday evening and pick it up again Monday morning, it has stopped. You need to reset the time and, if the watch has a date complication, the date.
65 hours covers the full weekend with margin. A watch taken off Friday evening will still be running Monday morning. For someone who rotates between two watches, or who does not wear their watch on weekends, this is a meaningful practical difference.
The framing that watch brands have used for years around extended power reserves is "weekend-proof." The SW200-1 was not. The SW200-2 is, with hours to spare.
What This Means for SOREN
The SOREN Momentis and Oceanic currently use the SW200-1. As Sellita transitions production to the SW200-2, it is likely that future production runs of SOREN watches will incorporate the updated calibre. The dimensions are identical, the architecture is compatible, and the upgrade is a clear improvement for the buyer.
When that transition happens, buyers will receive 65 hours of power reserve instead of 38, a more efficient winding system, and improved long-term rate stability, with no change to the case, dial, or bracelet.
For buyers considering the Swiss Made standard and what it means for movement quality, the SW200-2 strengthens the case. A Swiss Made automatic with 65 hours of power reserve at 28,800 bph, in a watch under €700, was not previously available.
SW200-2 vs the Competition
The SW200-2 Power+ sits in a market that has become more competitive in recent years.
The Tissot Powermatic 80 (ETA-derived, available to Swatch Group brands) offers 80 hours at 21,600 bph. More power reserve, lower frequency.
The La Joux Perret G100, launched in 2022 by Citizen, offers 68 hours and is used by some independent brands. It prompted Sellita to accelerate the SW200-2 development.
The SW200-2 offers 65 hours at 28,800 bph. Slightly less power reserve than both rivals, but the only one of the three to maintain full frequency. For buyers who prioritise seconds sweep fluidity and COSC compatibility alongside extended power reserve, the SW200-2 is the strongest overall specification.
For a broader view of how the SW200 family compares to other movements in the accessible Swiss Made daily wear segment, that guide covers the landscape in more detail.
FAQ
What is the difference between the SW200-1 and the SW200-2 Power+?
The SW200-2 Power+ is a significantly re-engineered version of the SW200-1. The power reserve increases from 38 to 41 hours to 65 hours. Sellita rebuilt the barrel, gear train, winding system, regulating organ, and shock protection. The dimensions and overall architecture remain the same, which means the SW200-2 is a drop-in replacement for the SW200-1 in existing watch designs. However, most individual components are not interchangeable between the two calibres.
Does the SW200-2 run at the same frequency as the SW200-1?
Yes. Both run at 28,800 bph (4 Hz). This is a deliberate choice by Sellita. The main competitor extending power reserve at this level, the ETA Powermatic 80, achieves its 80 hours partly by reducing frequency to 21,600 bph. The SW200-2 keeps full frequency while delivering 65 hours.
When will the SW200-2 be available in watches?
Sellita announced the SW200-2 in February 2026 and began offering it to existing accounts first. The SW200-1 remains in production during a transition period. Specific brands will introduce the new movement in new models or updated production runs over the course of 2026 and 2027.
Is the SW200-2 worth waiting for?
If you are deciding between buying now with an SW200-1 or waiting for SW200-2 equipped watches, the honest answer is that the SW200-1 is an excellent movement that has proven itself over nearly two decades of widespread use. The SW200-2 is an improvement, but the SW200-1 is not a compromise. If a watch you want is available now with the SW200-1, there is no strong reason to wait.
Does the SW200-2 affect the Swiss Made certification of a watch?
No. Both the SW200-1 and SW200-2 are manufactured in Switzerland by Sellita and meet all requirements for Swiss Made certification. The upgrade does not change the certification status of watches that use either calibre.
Can the SW200-2 be serviced by any watchmaker?
The SW200-2 uses some components that are not interchangeable with the SW200-1. A qualified watchmaker familiar with Sellita calibres can service the SW200-2, but they need to source SW200-2 specific parts rather than substituting SW200-1 components. As the calibre becomes more widely adopted, parts availability will increase.
The Bottom Line
The SW200-2 Power+ is the most significant update to Sellita's flagship calibre since the SW200-1 was introduced in 2008. A 65-hour power reserve at 28,800 bph, with upgraded internal components throughout, makes it the strongest specification in the accessible Swiss automatic movement segment.
For buyers of Swiss Made watches under €700, the SW200-2 sets a new baseline. Weekend-proof power reserve, full frequency, proven Swiss manufacturing, and easy long-term serviceability in the same dimensions that have been standard across the industry for years.
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