The Mare Nostrum Acciaio 42 mm

From Panerai -

Courtesy of Panerai

Here are the pertinents -

Courtesy of Panerai

MOVEMENT Hand-wound mechanical, exclusive Panerai OP XXXIII calibre. FUNCTIONS Hours, minutes, small seconds, chronograph. CASE 42 mm, brushed steel. DIAL Blue with luminous markers and Arabic numerals. Minute counter at 9 o’clock, seconds at 3 o’clock, central chronograph seconds hand. POWER RESERVE 42H. WATER-RESISTANCE 5 bar (~50 metres).