Eberhard & Co. Chrono 4 Géant Full Injection

Eberhard & Co. has joined the “all-black” watch party with a new, limited-edition version of its well-known Chrono 4 Géant, nicknamed “Full Injection,” released ahead of the 2013 Baselworld watch fair in April.

The watch gets its name — and its sleek, dark, “stealth” look — from the special treatment used to harden the 46-mm steel case. The process, an advanced low-temperature carbon diffusion, allows the “injected” carbon to penetrate the steel for 30 micrometers to produce a structural hardening. The result is a marked improvement in the case’s wear-resistance and fatigue limit. The black coloring comes from the use of a DLC (Diamond-Like Coating) treatment called Dianoir, which is used on the case, bezel, crown, chronograph push-buttons, and buckle.

The dial is also black, with black chronograph subdials (arranged in a horizontal line as per the Chrono 4′s patented design) and red hands for the chrono counters and central seconds. The dial has a circular metal plate with a côtes de Genève pattern, a tachymeter scale on the flange, and applied luminescent indices. The center-mounted hands are sword-shaped and partially skeletonized.

The case is 14.1 mm thick and is water-resistant to 200 meters. Its caseback, on which is engraved the words “Full Injection,” is affixed by eight screws. The screw-down crown, which is protected by a crown guard, is adorned with a bas-relief Eberhard & Co. shield. The push-buttons also screw down, and the bezel, which has six black PVD-treated screws and black engraved numerals, turns in one direction in the style of a professional divers’ watch. The strap is made from black rubber and has a vertically sculpted motif and a bas-relief Eberhard “E” shield.

Eberhard’s automatic chronograph movement, Caliber EB.250, built on a ETA 2894 base movement, powers the watch and its four counters, which display, from left to right, the chronograph minutes and hours, the time on a 24-hour scale, and the running seconds. The date appears in a window at 12 o’clock. The Chrono 4 Géant Full Injection will be produced in a limited series of 500 pieces.

Source: watch time