I guess that you may not forget the thing which is from another recent feature, the true roots of Panerai came to be on account of the Radiomir, however, the typical Panerai Luminor is nothing but an extra part.
The great effort from the brand arrived nearly 14 years after its sibling in 1950, getting its name from a patent filed by the brand a year earlier. Luminor was a successor to the Radium-based Radiomir luminous material, this time using tritium as its base. 
This modern Luminor first released several years ago, once again expanding the model range. It features a 42mm steel case, housing a matte-finished black dial with cream-colored indices that give the piece a slightly aged look. The key point is, the piece was fitted with one of the replica Panerai’s in-house manufacture calibers, the P.9010. This fake Panerai has been making a concerted effort to convert its entire model line to in-house calibers over the years, most recently adding them to its Due model line in 2018—surprisingly without charging any extra premium over the past models which had been fitted with outsourced movements. Among all these things, what sets the P.9010 apart is its 3-day power reserve, delivered via a pair of mainspring barrels. To this day the huge majority of luxury replica watches competing in this price bracket offer a power reserve in the ballpark of 40-50 hours, and though the added running time is unlikely to be a dealbreaker for anyone, it’s absolutely a perfect benefit.
Though the Luminor is now considered more of a daily-wear casual replica watch, at its roots its intended purpose was diving, and fitted with the correct strap it is still perfectly capable of spending some time underwater. This fake model is rated for 10bar (about 100m), which is more than enough for spending time in the pool, surfing, snorkeling, and even most mild recreational diving for that matter. It is said that once fitted with its supple calfskin leather strap as seen here, the Luminor Marina 1950 3 Days Automatic is the best companion for everything from running weekend errands to a casual night out on the town. With the thickness of 13.2mm, it’s still a little too hefty to consider tucking under a dress shirt cuff, but it’s a broadly acceptable choice for any other type of attire.