Eighty-one grams, a hundredth of a second, and a yellow dial. The titanium Centigraphe is the only chronograph in the collection that can be worn without thinking about it, and the only one measuring to a hundredth of a second that anybody would take outdoors. The case is grade 5 titanium at 44 mm with a ceramic bezel, on a titanium bracelet, and the dial is cut from aluminum alloy in a yellow that exists nowhere else in the range except on its sibling in the same line. It is a current reference. Everything about the specification was chosen to remove weight, which is a strange objective for a watch with three chronograph trains inside it.
Grade 5 titanium is used for the case and the bracelet and taken matte throughout, with a ceramic inlay in the bezel because that is the surface most likely to take a knock. The case measures 44 mm across and 11 mm deep. Bracelet links are articulated where they meet the case so the watch follows a wrist rather than bridging it, and the clasp carries a few millimeters of adjustment. The dial is aluminum alloy rather than silver or gold, finished yellow, with applied indexes and numerals standing off the surface. The three chronograph counters are sapphire, which means they read as openings rather than as printed circles, and against yellow that contrast is unusually strong. The operating rocker sits in the case band at two o'clock. Nothing on the watch is polished, and the only bright element on the whole exterior is the sapphire over the dial. Titanium in grade 5 is the alloy used for aerospace parts rather than the commercially pure grades most watch cases use, and the practical difference is that it holds an edge and takes a matte finish that does not go patchy with wear. That matters on a case with as many surfaces as this one. The bracelet tapers slightly toward the clasp, which is what stops a 44 mm watch from looking slab-sided from above, and the whole assembly can be lifted with one finger.
The chronograph is the reason the watch exists and it works differently from any other. Three counters divide the measurement: a hundredth of a second at ten, twenty seconds at two, and ten minutes at six. The hundredth hand is a foudroyante, completing a revolution every second, and it can be stopped anywhere along that path including between two divisions, so a fractional reading is possible where most chronographs round to the nearest step. Each of the three hands runs on its own train drawn directly from the center of the mainspring rather than from the going train, which is what keeps the chronograph from taking energy out of the timekeeping. The movement is hand wound, and in the titanium versions it is built in aluminum alloy rather than the rose gold used in the precious metal ones, which is where most of the weight saving comes from. An aluminum movement carrying a chronograph of this precision is a strange object to hold, since the material is normally chosen for lightness alone and that reason belongs nowhere near a mechanism like this. Journe finishes it to the same standard as the gold versions, with circular graining and stripes visible through the sapphire back, which means the decoration is being applied to a metal that gains nothing from it. That is either indefensible or exactly right depending on how the collection is read.
The Centigraphe began in 2007 as a 40 mm dress watch built after conversations with Jean Todt through the ICM foundation, and it won the Aiguille d'Or at Geneva the following year. A share of the profit from every one made goes to the institute, which has been true of every version since. Moving the mechanism into a sports case was a later decision and it suits the watch better than the original format did, since a chronograph conceived around motor racing belongs on a bracelet more naturally than under a cuff. The LineSport itself started as the Octa Sport in 2012 and took its present form in the 2018 rebuild at 44 mm with grade 5 titanium and a ceramic bezel. The yellow dial arrived with that revision. Putting the Centigraphe into that case took longer than putting the Automatique Reserve there, because a chronograph has controls and controls have to be reachable. The rocker solved that. On a dress watch it was an elegance; on a sports watch it becomes the only sensible way to operate a chronograph while moving, since two pushers require a second hand and a stationary wrist. That is the sort of thing a designer only discovers after the fact, and it is the strongest argument that the LineSport version is the format the mechanism should always have been in.
This is the version to buy if the chronograph is going to be used rather than admired. The weight makes it wearable through a day of activity, the sapphire counters stay legible in bright light, and nothing on the case will be ruined by contact with the world. The yellow is a decision and will not suit everybody, though it is less aggressive in person than in photographs because the aluminum surface absorbs rather than reflects. As a current reference the obstacle is allocation rather than condition. The rocker is the control worth testing at length, since it is used more than any other part of the watch and it is the one thing that separates a Centigraphe from an ordinary chronograph. The dial is the part that cannot be replaced, since aluminum in this yellow appears on nothing else, so a clean face is worth waiting for. The case will pick up marks and matte titanium absorbs them better than any other material the house uses, which is a large part of why this version gets worn rather than kept.
