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Movement tier: unclassified · caliber Panerai Cal. P.4001/S: in-house skeletonised automatic, 28,800bph, 72h PR, 31j; 341 components, off-centre tungsten micro-rotor, two Panerai patents · 72h power reserve (3 days)
Large case: suits wrists 7 in+ (18 cm+)
47 mm case. 26 mm lug width. A bold, statement-size wear. Best suited to larger wrists where the case sits flush.
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A 47mm skeletonised titanium Submersible, boutique-exclusive and made by laser-sintering titanium powder rather than machining a billet. That construction is unusual enough to be its own authentication check.
Known issues in the market
The case is DMLS, direct metal laser sintering, and sandblasted. Its surface has a characteristic fine granularity that a machined-and-blasted case does not reproduce exactly.
There is no dial plate. The indices float and the hands are openworked, so anything resembling a conventional dial under the hands is wrong.
Panerai publishes neither thickness nor lug-to-lug for this reference, so a listing quoting confident figures for either is quoting something other than Panerai.
Area
What to check
What is correct
Red flag
dial
Absence of a dial plate
Skeletonised through to the movement, with floating lumed indices
Any solid dial surface behind the hands
case
DMLS surface texture
A fine, even sintered granularity under sandblasting, consistent across the case
Machining marks, or a smoothness inconsistent with a sintered surface
movement
Cal. P.4001/S micro-rotor
Off-centre tungsten micro-rotor visible, 72-hour reserve indicated on the back
A full rotor, or a reserve well short of three days
case
Unidirectional anticlockwise bezel
Turns anticlockwise only against a matte blue ceramic disc
Bidirectional rotation
Common legitimate replacements
Rubber straps are consumable; the 26/22 taper is specific to this case.
Bezel discs are replaced after damage.
Expert resources: Panerai boutiques can confirm the reference and its exclusivity. Because it is a 2026 boutique-only release, an independent watchmaker is unlikely to have parts.
