The information given is correct.
Here is more about the GMT
Luminor GMT 44 mm
Movement: automatic mechanical, exclusive Panerai OP VIII calibre, 13¼ lignes, 21 jewels. Côtes de Genève decoration on the bridges. PANERAI personalised oscillating weight. Glucydur® balance, 28,800 alternations/hour.
Incabloc® anti-shock device.
Power reserve 42 hours.
Chronometer Certificate (C.O.S.C.).
Functions: hours, minutes, small seconds, date, second time zone.
Case: diameter 44 mm, AISI 316L polished steel or brushed titanium.
Bezel: polished steel or brushed titanium.
Back: screw, steel or titanium.
Device protecting the crown: (registered Trade Mark) polished steel or brushed titanium.
Crystal: sapphire, formed of corundum, 3.5 mm thick, magnifying lens over the date at 3 o'clock. Anti-reflective coating.
Water-resistance: 300 meters.
Strap: alligator with PANERAI personalised adjustable buckle. Supplied with a steel screwdriver and a second interchangeable strap.
Bracelet: integrated with the case and made up of links, each consisting of two parts, one titanium and one steel, overlapped and screwed.
* Officine Panerai is not the owner of the Trade Marks Glucydur®, Incabloc®.
Luminor GMT 40 mm
Movement: automatic mechanical, exclusive Panerai OP VIII calibre, 13¼ lignes, 21 jewels, Côtes de Genève decoration on the bridges. PANERAI personalised oscillating weight. Glucydur® balance, 28,800 alternations/hour.
Incabloc® anti-shock device.
Power reserve 42 hours.
Chronometer Certificate (C.O.S.C.).
Functions: hours, minutes, small seconds, date, second time zone.
Case: diameter 40 mm, AISI 316L brushed steel.
Bezel: polished steel.
Back: screw, brushed steel.
Device protecting the crown: (registered Trade Mark) polished steel.
Crystal: sapphire, formed of corundum, 2.5 mm thick, magnifying lens over the date at 3 o'clock. Anti-reflective coating.
Water-resistance: 300 meters.
Strap: alligator with PANERAI personalised steel adjustable buckle.
Hope it helps.