|Caliber||BRELLUM BR-750-1 Automatic Chronometer|
|Certification||Officially Chronometer Certified by the COSC|
|Decorations||Decorated with «Côtes de Genève», blue screws, oscillating weight BRELLUM|
|Power reserve||46 hours|
|Chronograph||1/4 second, 30 minutes, 12 hours|
|Functions||Hours, Minutes, Seconds, Dates, Chronograph, Pulsometer|
|Material||Stainless Steel 316L, DIN 1.4435|
|Crystal||Sapphire crystal BOX type both sides with anti-reflexion treatment|
|Case back||Numered exhibition case back with box sapphire crystal|
The timeless design of the Duobox Classic Chronometer collection is characterized by its chevé (box) sapphire crystal, its slightly curved dial surmounted by diamond cut indexes and its perfectly sized and readable hands.
The collection is called Duobox in reference to its two box type sapphire crystals, formerly produced in plastic.
The heart which beats inside the Duobox Chronometer is the Valjoux 7750 automatic movement, developed in the 1970s and since then elevated to the rank of an icon of Swiss watchmaking, renowned for its precision and robustness qualities. Decorated with care, it is surmounted by the BRELLUM oscillating weight treated with the same delicacy.
A guarantee of absolute precision, the movement is officially chronometer-certified by the COSC, an official independent organization certification which provides an individual chronometry certificate with each BRELLUM watch.