here are some informations:
The Sea-Dweller DEEPSEA is equipped with calibre 3135, known for its chronometric precision, its reliability and its robustness; it also features a PARACHROM hairspring with high resistance to shocks and magnetic fields.
Certified as a chronometer by the Swiss Official Chronometer Testing Institute (COSC), the movement has a 48-hour power reserve.
(source: horlogerie-suisse.com)
This message has been edited by DrStrong on 2008-10-05 12:49:37