3130
Alternative replacement parts for calibers 3130, 3131, 3132, 3155, 3175, 3185 and 3186
The automatic movement 3130 (without date module) has been used since 2001 in the models Air-King, Submarine No Date, Explorer I, the caliber 3131 in the Milgauss, the 3132 (smaller dimensions compared to the 3131 < 40mm case) in the Explorer, the 3185 or 3186 in Explorer II or GMT-Master II.
The origin of the 31 series is the popular caliber 3135, which is installed in the Submariner Date, Datejust, Sea-Dweller, Yacht-Master, among others. The 3136 is the larger caliber for > 40mm cases, e.g. in the Datejust II.
3155 (successor to the 3055) is known for its written out day of the week (e.g. Day Date), the 3156, also with a day of the week, is the somewhat larger movement compared to the 3155, found in the Day Date II with a 41mm case.
