Reviews

VSF vs Clean Daytona 126500LN Review: DD4131, Crystal Edges, Clasps and Lume

VSF vs Clean V2 Daytona comparison: DD4131 inspection, crystal-edge differences, clasp finishing, RP9 correction, lume evidence and sample-specific QC.

Review date: Unknown
Page updated: 2026-09-21
Last verified: 2026-09-21

Verification applies only to the listed facts and explicit review scope.

On this page

Original video
Video chapters
Key facts
Detailed review
Strengths
What to watch for
Questions answered
Transcript
Sources & provenance

Original video

Video chapters

Key facts

Key facts
Field	Value	Assertion nature	Editorial verification	Source type
clasp.source_correction	VSF sample engraving reads RP9, corroborating the embedded video subtitle and correcting supplied TXT 2P9. Codes alone do not authenticate origin.	OBSERVED	CORRECTED	VIDEO_AND_TRANSCRIPT
comparison.historical_value	Clean above RMB 4000 and VSF a few hundred lower are undated recording-context statements, not current offers.	CLAIMED	CONFIRMED	VIDEO_AND_TRANSCRIPT
comparison.clasp	Reviewer judges brushing, polishing, beveling and opening/closing feel very similar. Logos partly covered; protective films remain.	CLAIMED	CONFIRMED	VIDEO_AND_TRANSCRIPT
comparison.crystal_edge	Clean is shown on the left with a rounded crystal-edge bevel; VSF on the right has a more defined sloping chamfer. Sample-specific visual distinction.	OBSERVED	CONFIRMED	VIDEO_AND_TRANSCRIPT
identity.comparison	Newer Panda and black-dial ceramic-bezel Daytonas correspond visually to 126500LN designs; Clean V2 and VSF attributions are from the reviewer.	REPORTED	CONFIRMED	VIDEO_AND_TRANSCRIPT
movement.identification	Two opened movements shown together; reviewer identifies both as DD4131. No supplier audit, teardown or reliability test.	CLAIMED	CONFIRMED	VIDEO_AND_TRANSCRIPT
movement.budget_context	4801 is mentioned as a separate budget option, not tested against the opened DD4131 pair.	CLAIMED	CONFIRMED	VIDEO_AND_TRANSCRIPT
comparison.lume	Four watches visibly glow blue in a dark scene. Similar brightness is reviewer judgment; no measured output, timed decay or genuine control.	OBSERVED	CONFIRMED	VIDEO_AND_TRANSCRIPT

Detailed review

What this comparison establishes

This comparison places Clean's reviewer-described V2 upgrade beside VSF's standard offering in white Panda and black-dial Daytona configurations. The reviewer identifies both main offerings as Dandong 4131. His clearest exterior distinction is the crystal edge: a rounded bevel on Clean and a more defined sloping chamfer on VSF. The recording also shows two exposed movements, clasp handling and a dark-room lume comparison. It supports a component-by-component assessment of these samples, not an overall factory ranking.

Which watches and versions are being compared?

The four watches correspond visually to the newer Rolex Cosmograph Daytona 126500LN design: white dials with black subdial rings, or black dials with contrasting light rings, black tachymeter bezels and Oyster-style bracelets. Panda is the useful white-dial search term; black-dial ceramic-bezel Daytona is more precise than treating “Black Ceramic” as a black ceramic case.

The 126500LN reference context records the corresponding genuine design. Rolex's white-dial specification and black-dial specification establish that design and its genuine calibre 4131. They do not certify the replica materials or performance.

V2 is the reviewer's Clean version label. He describes a Dandong 4131 upgrade, but provides no authenticated batch date or complete factory change log. His phrase “VS official version” distinguishes the main VS offering from the cheaper 4801 option discussed later; it does not mean Rolex authorization. Factory names and manufacturing origin remain source attributions. The recording date is unknown.

Key takeaways from the actual comparison

Crystal edge: Clean is presented on the left and VSF on the right during the Panda close-up. Their edge treatments look different; the reviewer finds no meaningful clarity difference in this lighting.

Movement: two casebacks are already removed. The reviewer points to the balance and regulator areas and identifies both as DD4131. This is stronger inspection evidence than a seller label alone, but it is not a teardown, supplier audit or endurance test.

Bracelet and clasp: both are handled side by side. The reviewer considers brushing, polishing, beveling and opening/closing feel very similar. Some logos are covered and protective films remain, limiting what can be assessed.

Lume: all four watches are shown glowing blue in a dark scene. Comparable-looking brightness in that shot does not establish equal output, duration or genuine-equivalent luminous material.

Crystal edge versus crystal clarity

Around 00:46–01:15, the macro sequence isolates the edge profile. The reviewer describes Clean's edge as rounded and VSF's as a cut bevel forming a small slope. This is a useful distinction to request in oblique sample photographs because a straight-on dial photo may obscure it.

He also says both edge types occur on genuine watches. No genuine comparison piece or documented crystal-part history is supplied, so that remains his expert assertion. It should not be turned into proof that either replica crystal matches a particular genuine production batch.

Likewise, his judgment that transparency is the same does not establish identical coatings, optical transmission or reflection under every angle. He sees very little difference in the bezel, engravings, dial color, printing and hands. The black-dial pair receives another close comparison later, but the recording supplies no dimensional or colorimetric measurements.

A 126500 Clean-versus-VSF community discussion shows why this distinction matters: buyers ask about reflective or “milky” crystals and whether a Deep aftermarket replacement is worthwhile. Those reports involve different offerings, including SL4801 versions, and do not overturn this sample's comparison. Request unfiltered photos of the exact crystal before budgeting for a replacement.

DD4131 identification: what the opened watches establish

Around 01:29–02:00, both movements are visible together. The reviewer emphasizes the apparent similarity of the balance location and regulator components, as well as movement finishing. The DD4131 entity is reused here, with this recording providing its own opened-sample evidence rather than borrowing a test from another review.

His confidence in stability and power reserve is a judgment. There is no timegrapher result, measured reserve duration, winding-efficiency experiment or complete chronograph start/stop/reset and counter-advancement test in this comparison. Similar visible architecture does not prove identical adjustment, lubrication, service condition or long-term reliability. Nor does DD4131 mean a genuine Rolex movement or verified interchangeability with genuine parts.

Be particularly careful with the bare label “4131.” A Clean-labeled Panda QC discussion describes SH4131 and raises questions about crystal, codes and factory identification. That illustrates inconsistent listing contexts; it is not proof that the reviewer here misidentified his opened samples. Match the exact movement designation, batch claim and sample photographs before comparing prices.

Bracelet, clasp and the RP9 correction

The bracelet sequence compares the internal brushed surfaces, clasp beveling and polishing. The reviewer says earlier VS clasps sometimes lagged behind Clean, but considers this newer Daytona pair close in both finishing and feel. That historical comparison is his experience, not a measured survey of previous production.

He reports M5X for Clean. For VSF, the supplied TXT says 2P9, but the video subtitle says RP9 and the exposed clasp engraving at approximately 02:53 visibly reads RP9. The article therefore uses RP9 for this sample. The original supplied text is retained in the source record with this explicit editorial correction.

Neither code is a unique serial or independent factory authentication. Covered logos also prevent a full comparison of those details. Buyers should inspect their own clasp engraving, edge finish, closure and end-link fit rather than rejecting or accepting a watch solely because one code matches this recording.

Lume and value: similar appearance, limited measurements

The closing dark-room sequence shows blue light from the hands and hour markers. The reviewer considers the samples similarly bright and accurate to the genuine design. Only the visible glow and his assessment are established: there is no measured illuminance, controlled charging protocol, timed decay comparison or genuine control watch. No claim of equal all-night legibility follows from this shot.

His price comparison places Clean above RMB 4,000 and VSF a few hundred RMB lower, with occasional strap/end-link promotions. He separately mentions a VSF 4801 budget option above RMB 2,000. These are undated recording-context offers, not current prices or included accessories promised by this page.

The 4801 is an alternative mentioned in conversation, not a third movement tested against the opened DD4131 pair. Our VSF Daytona movement-options review explains why exterior generation and movement specification must be recorded separately.

What to check on the offered sample

Compare like-for-like quotes: 126500LN-style Panda or black dial, factory attribution, claimed version, exact movement and crystal specification. Ask for oblique crystal-edge photographs, neutral-light dial/bezel photos, readable clasp codes, movement views, and a clasp demonstration. For performance, request a timing result with conditions and a chronograph function video; reserve and water resistance require separate tests.

This recording gives buyers a specific crystal-edge distinction and evidence that the reviewer found the main DD4131 offerings close in several other areas. It does not establish a universal Clean or VSF winner. Use the existing Clean Factory and VS Factory records for attribution context, then judge the offered sample against the component evidence above.

Sources & provenance

Strengths

Side-by-side crystal-edge views, two opened movements, clasp handling and a four-watch lume scene.

What to watch for

Exact batches, recording date and manufacturing provenance unconfirmed. No measured optical transmission, timing, reserve, weight, thickness, water resistance or reliability results.

Movement summary

Both main offerings identified by reviewer as DD4131 with exposed movements. 4801 is a separately mentioned budget alternative.

Questions answered

Is this a 116500LN or 126500LN comparison?

The shown newer Panda and black-dial configurations correspond visually to the 126500LN design. Reference engravings are not independently authenticated.

Do both compared factories use DD4131 here?

The reviewer identifies both main offerings as Dandong 4131 and shows two opened movements. This does not establish the movement in every watch sold under either factory name.

What is the clearest exterior difference?

The crystal edge: Clean is described and shown with a rounded bevel, while VSF has a more defined sloping chamfer. Clarity and other finishing comparisons remain sample-specific judgments.

Is the VSF clasp code 2P9 or RP9?

The supplied TXT says 2P9, but the video subtitle and readable clasp engraving show RP9. RP9 is used for this sample; a clasp code alone does not authenticate its origin.

Does the lume comparison prove equal brightness and duration?

No. Blue glow is visible and the reviewer judges brightness similar, but no controlled brightness measurement or timed decay test is supplied.

Does this review justify a crystal upgrade or an overall factory winner?

No universal recommendation follows. Inspect the exact crystal, movement, finishing and QC evidence, then compare current like-for-like quotes. The reviewer considers these samples close overall.

Transcript

Clean V2 and VSF Daytona comparison scope 00:00:03,000–00:00:10,000

This video is a brief comparison of the Clean Factory's new Panda Daytona and Black Ceramic Daytona V2 upgraded version versus the VS Factory's official version.

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Clean left, VSF right: crystal-edge profiles 00:00:52,000–00:00:59,000

The left is Clean Factory, the right is VS Factory. The edge of the crystal on the Clean Factory has a rounded bevel. See it?

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Two opened movements identified as DD4131 00:01:34,000–00:01:47,000

Let's take a close look. Both factories use the Dandong 4131 movement. The stability is excellent and very reliable. Look at the balance wheel position, the regulator pins' position and thickness are exactly the same.

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Clasp finishing and covered-logo limitation 00:02:17,000–00:02:29,000

For certain reasons, I have covered the logos. Look at the beveling and polishing of the clasp. They are almost exactly the same. In many previous models, VS Factory's clasps...

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VSF clasp code: TXT 2P9 corrected to visible RP9 00:02:48,000–00:02:59,000

And this is VS Factory, using 2P9. This is the clasp code for the new Black Ceramic Daytona. The opening and closing feel and all aspects are almost identical.

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Historical price and accessory comparison 00:03:31,000–00:03:41,000

The price for the new Clean Factory model is over 4,000 RMB, while the VS Factory is a few hundred RMB cheaper. Moreover, VS Factory often has promotions giving away rubber straps and end-links, making it more budget-friendly.

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4801 budget alternative mentioned, not tested 00:03:41,000–00:03:54,000

Additionally, VS Factory offers a budget version with the 4801 movement for just over 2,000 RMB, which is also quite stable. If your movement requirements aren't very high and you have many watches in rotation, the 4801 movement is a good option.

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Four-watch blue-lume comparison 00:03:54,000–00:04:08,000

Alright, finally, let's compare the luminescence of the two factories. We can see the lume on both is completely accurate to the genuine, and the brightness is almost identical. Let's look closely—basically no difference.

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