Most Panerai movements are manufactured by Panerai itself. The most widely used movements are Cal. P.3000. They are made by Panerai completely and often used as the basic movements. The Cal. P.3000 continues main characteristics of Panerai movements from the aspects of sturdiness, precision and power reserve. Many classic watches are driven by P.3000 movements like Panerai Radiomir copy watches with black dials. Their functions are showing the hour and minute and the date.
The diameter of the movements is 16½ lignes whose broad size is from the original ones used for historic Panerai watches. They have highly recognizable structure similar to that of three-quarter plate movements. The structure has a large bridge and a small one, covering the majority of the mechanical parts and is fixed to the bottom plate by a series of solid screws. So the structure is very rigid. The movements are equipped with 21 jewels and two spring barrels connected in series. The thin springs are used to deliver the more even power over a longer period of time and ensure the power reserve of 3 days.
Panerai Luminor 1950 replica watches with brown calf straps are driven by the same movements. The movements are also carried with Glucydur balances and Incabloc anti-shock devices. The frequency is 3 Hz. The movements are practical and reliable. In some cases, Panerai will improve them by more advanced technologies to support more complicated and precise functions.