Sellita Cal Sw300 1

Sellita Caliber SW300-1

Sellita Cal Sw300 1

ManufacturerSellita
Caliber NumberSW300, SW300-1
Clone Of
ETA 2892-A2
Movement Type
Automatic, self-winding mechanical
Lignes11.5”’
Diameter
25.6mm
Height3.6mm thick
Jewels25
Vibrations Per Hour28,800 bph, 4Hz
Lift Angle51 degrees
Acceptable Amplitude
200-315 degrees
Power Reserve42 hours (up to 56 with new Optimization Barrel)
Rotor Style
Ball Bearing
Rotor Winding Direction
Bi-directional
Hand-Windable?
Yes
Anti-Shock Device
Novodiac or Incabloc (depending on the grade)
MainspringNivaflex NM
Hairspring Collet
Nivatronic
Hand Count
3
FunctionsCentral hours; central minutes; central sweeping seconds; date at 3:00
Hacking Seconds?Yes
Quickset Date?Yes
Country of ManufactureSwitzerland, Swiss made
Known Models
Sinn U50 (Too many to list, please add your watch in the comments below…)

The Sellita caliber SW300-1 is a slim automatic watch movement, Swiss made with 25 jewels. This caliber is the main competitor and clone of the ETA caliber 2892-A2. Many reputable watch companies are using this movement as an alternative to the ETA mechanism due to it being more economical and readily available – and as of 2020, it also offers more power reserve than the ETA.

You may have seen this movement written as the SW-300 but according to Sellita, the correct way to spell this caliber number is SW300 without a hyphen between SW and 300.

Sellita caliber SW300

SW300-1 a VS SW300-1 b:

Generally when you see the caliber number SW300-1 it will be in reference to a 3-hand movement with a date at 3:00, but there is also a No Date version of the SW300-1. The no date version is a real no date without a phantom date position. Sellita officially identifies these as SW300-1 a (date) and SW300-1 b (no date).

Editor’s gripe: This doesn’t seem like the best way to handle caliber designations, but if you’ve spent enough time on this site then you will already know that I don’t like how most watch movement manufacturers and brands handle their caliber numbering. A better way would be to reference the no date version as SW300-1-ND, or have a totally different number such as SW301-1. Some brands use the “SW300-1 a” without a date cutout on the dial, meaning you’d have a no date watch but still with an “SW300-1 a” caliber. 

SW300 Family:

There are technically two versions of the SW300-1:

SW300-1 a – This is the most common variation. It has a date at 3:00.

SW300-1 b – This is a no-date version of the SW300-1. It is a true no-date, meaning that the calendar components are completely removed without any phantom date position.

The SW300-1 is the base calibre of the SW300 family. There are two other variations in this family of Sellita movements:

SW200-1 VS SW300-1:

While the SW200-1 and SW300-1 share many similarities, they are not the same. The biggest difference between the two, as pointed out in the Sellita catalog, is that the SW300-1 is a 1mm slimmer movement. The SW300-1 is 3.6mm thick and the SW200-1 is 4.6mm thick. This makes the SW300-1 a preferred choice for thinner models such as higher end dress watches.

SW300-1 VS SW300-2:

At the time of this post, there is no such thing as the SW300-2. If Sellita makes any major changes to the SW300-1, they may designate the updated movement as SW300-2 to mark an evolution of the SW300-1.

Replacement Prices:

At the time of this post, replacement prices were found online for around $280.00 USD.

Examples of watches with the SW300-1:

Sellita SW300-1 in this Sinn U50 dive watch:

Sellita Calibre Sw300 1 Sinn

Sellita Sw300 1 Regulator Balance Wheel

CC member Willem submitted the image below of a Sellita SW300-1 found in his MeisterSinger Pangaea watch:

Sellita SW300-1 in a MeisterSinger Pangaea

Other Watches with the Sellita Cal. SW300:

Brands using the SW300-1 as a base caliber:

TAG Heuer uses the SW300-1 as a movement for their Calibre 7 movement. If you know of other watch brands with their own caliber designation, but using the SW300-1 to power the watch, please comment below or submit it here.

Additional Resources:

Image submitted by Willem, thank you!

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Thomas C Helm
Thomas C Helm
5 years ago

The current Glycine Airman 18 GMT lists this as the movement in its watch.
I’m pleased with it!

Roman Susov
Roman Susov
4 years ago

This caliber is used by Montblanc watch company as a base for its caliber mb24.09. So it is used in TimeWalker Automatic series, e.x. models 110337, 110340, 112532 etc.

David J. Greenspun
David J. Greenspun
4 years ago

What are the “grade” differences in the SW300? I’ve recently ordered a Lundis-Bleus Ref 1200.

Rob M.
Rob M.
4 years ago

The Monta Triumph has this movement. Regulated to chronmeter specs of plus or minus 5 seconds per day.

Jim
Jim
1 year ago
Reply to  Rob M.

I believe that Monta uses this movement, modified of course, in all there non-GMT pieces.

Wojtek
Wojtek
4 years ago

Does anybody know how many turns of crown fully wind the mainspring?
I have Glycine Airman Base 22 Purist with this movement. Beautifull ticking 😉

trackback
New Watch Alert: 5/1/2020 - The Truth About Watches
3 years ago

[…] model looks like it has a dust ruffle. A relatively slim, thoroughly reliable and accurate enough Selita SW300-1 motivates all three. As with most new watches marketed in the midst of Coronageddon, expect to […]

Glenn
Glenn
3 years ago

Glycine Airman No. 1 Limited Edition uses this. Amazing timekeeper!

trackback
Bell & Ross DIVER FULL LUM Review - The Truth About Watches
3 years ago

[…] horological glow worm’s powered by their third gen BR-CAL.302 movement (Sellita SW300-1 base). The dead nuts accurate engine’s 28,800 bph beat rate yields a 38-hour power […]

Scott
Scott
3 years ago

Excellent caliber used in the new midsize Sinn U50 diver. Good enough for Sinn, good enough for me!

trackback
New Watch Alert: 8/21/2020 - The Truth About Watches
3 years ago

[…] budget-priced everyday Swiss sports watch: 38.5mm 316L steel case, 150m water resistance and modded Sellita SW300 movement (42-hour power reserve, Incabloc anti-shock, Nivatronic balance spring). Where the Nobel breaks […]

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New Watch Alert: 8/18/2020 - The Truth About Watches
3 years ago

[…] Horlogerie.” The 40th Anniversary models are updated with the Hublot’s HUB1112 (base Sellita SW300-1) behind a transparent caseback. So there is […]

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Sinn 856 I B Tegimented - The Truth About Watches
3 years ago

[…] 856’s case is made of tegimented steel, sheltering a Chronometer Grade (but not certified) Sellita SW300-1 (Timegraph tested by TTAW to -1 seconds per day accuracy). Here’s Sinn’s rundown on the […]

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New Watch Alert: 10/30/2020 - The Truth About Watches
3 years ago

[…] show. The glow-in-the-dark hands are motivated by Montblanc’s MB 29.25 caliber (base Sellita SW300), good for a 42 hour power reserve and unspecified accuracy. The watch would have been way cooler […]

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Formex Reef – Beans & Bezels
3 years ago

[…] Reef features a Sellita SW300, which is a terrific movement and one that I’ve had very good experiences with in the past. I […]

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Sellita Caliber SW330-1 Watch Movement | Caliber Corner
2 years ago

[…] Sellita SW300-1 […]

Darren P.
Darren P.
2 years ago

The new 2021 Formex Reef series of dive watches has the COSC-certified Sellita SW300 with a custom built skeleton rotor and thermally blued screws, but no display case back.

Ato
Ato
2 years ago

Hello I love your website and I thank you for it. Can you help me with one thing regarding the SW300 movement? What is the winding direction of the rotor? Does it wind both ways like my Seikos? I’m asking because I want to put my new watch on a watch winder. Thank you in advance!

Robin
Robin
8 months ago
Reply to  Ato

Yes, it winds bidirectional.

martin
martin
2 years ago

Muehle Glashuette Casual 29 uses this movement, albeit modified. Mine keeps a consistent +8 seconds a day.

Leo
Leo
2 years ago

I have this in my IWC portofino, the ticking is louder than the ticking of my hamilton eta 2824-2. The date jumps reliably at 6 minutes before 12 whereas my hamilton jumps reliably at 2 minutes before 12.My IWC runs at 3+ seconds per day. I can recommend it but beware of the louder ticking. I did not hear it but my girlfriend noticed immediately

Shariman
Shariman
2 years ago

Bell and Ross V2-92’s uses this calibre. Modified of course, but the claimed power reserve of 42 hours is exaggerated based on my observation.

Kevin R Simon
Kevin R Simon
2 years ago
Reply to  Shariman

I agree. It keeps great time, unless I take it off more than about 24 hours. A little disappointed in power reserve but, otherwise accurate.

trackback
Sinn U50 SDR-T – Beans & Bezels
2 years ago

[…] watch uses a top grade Sellita SW300-1. I like this movement a lot, as I’ve typically experienced better performance from them […]

David M
David M
1 year ago

Steinhart Ocean 39 GMT Ceramic has this SW330 running at +1s/day on mine.

trackback
Review: Maen Greenwich 38 GMT - Blue - WahaWatches
1 year ago

[…] expect to find one of the usual suspects, like the ETA 2893-2 or the Sellita SW330-1, in a microbrand GMT […]

Andy M
Andy M
1 year ago

This movement is used in the Christopher Ward C60 Abyss GMT. I can’t comment yet as it is still waiting to be opened after being delivered today 😉

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Introducing: the Oak & Oscar Humboldt GMT | Wrist Watch Review
1 year ago

[…] into the 39.5mm case is the Sellita 330 enabling the GMT complication, and of course giving you that taste of Swiss in a watch that calls […]

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Sellita Caliber SW510-1 Watch Movement | Caliber Corner
1 year ago

[…] Sellita SW300-1 […]

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TAG Heuer Calibre 7 Watch Movement | Caliber Corner
1 year ago

[…] ETA 2892-A2 or Sellita SW300-1 […]

Andreas
Andreas
1 year ago

This Caliber is in my Steinhart Ocean One 500 Titanium. Gains 2,5s a day. Love it.

Jay
Jay
8 months ago
Reply to  Andreas

Just picked up one of these. Has been spot on for 24 hrs so far. Will have to watch it over several days to get a real sense or put it on timegrapher. LOL

Nico
Nico
1 year ago

Frederique Constant FC-306….. uses this caliber, but with two hands. Excellent work!

trackback
Sellita Caliber SW330-2 Watch Movement | Caliber Corner
1 year ago

[…] Sellita SW300-1 […]

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Sellita Watch Movements (List) Watch Movement | Caliber Corner
1 year ago

[…] SW300-1 a – Date at 3:00 […]

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Test Drive: the Typsim 200m. – #3DLANES
11 months ago

[…] The movement inside the Typsim is a Chronometer grade Sellita SW300-1, rhodium decorated with blue screws. If your heart so desires, you can actually get the Typsim 200m Chronometer certified. The 200m is offered in two iterations, the 200m and the 200m-C (Limited quantity). The second version is a certified Chronometer with gold gilt accents. The gild color being one of two details that differentiate this watch from the non-certified version. The second detail… Read more »

Earl Bailey
Earl Bailey
10 months ago

Hello everyone. I have a Hubolt classic fusion 45mm. When I proceed with the hacking sequence, the minute hand moves slightly. I wonder if it a defect or common with the SW300a.

Omar Alexander
Omar Alexander
10 months ago
Reply to  Earl Bailey

Long time lurker and thread follower, first time caller but I’ll try my best to answer. Do you mean when you pull the crown out to set the time the minute hand moves slightly? I think you just have to be more careful. Hacking it means the hands can move because you can set it. The minute hand moves easier then the hour hand.

Earl Bailey
Earl Bailey
10 months ago
Reply to  Omar Alexander

Yes, I pull out the crown to set time, but min. Hand moves slightly each time. Other watches I have does not move like that.

Russell
Russell
4 months ago

Wolf Creek watch company uses this movement in their North Star Model

Fatih
Fatih
3 months ago

Rotor side left or right

Spartacus Robert
Spartacus Robert
3 months ago

This question was asked 4 years ago but I did not see it answerd: “What are the “grade” differences in the SW300?”
Thanks.

Spartacus Robert
Spartacus Robert
3 months ago
Reply to  calibercorner

Thank you!

Simon ford
Simon ford
2 months ago

The Briston Clubmaster GMT also uses the 330-1

Paul
Paul
2 months ago

The Titanium Aeroscope also uses this as a base caliber for its chronograph and 3 hand movements and upgrades the jewel count to I believe 42 or 43 jewels in its JR66 movement. Not bad Jean Richard did an excellent job on these models really upped their game on these Titanium masterpieces.

Talleyrand
Talleyrand
9 days ago

Nice, robust movement that is thin enough to make elegant watches….Like the Model 207 by RGM

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