La Joux-Perret G100

La Joux-Perret traces its roots to Jaquet SA, a La Chaux-de-Fonds firm founded in 1990 that assembled ETA-based movements and developed complications for third-party brands. Citizen absorbed the company in 2012, giving the Swiss operation access to Citizen's manufacturing know-how while preserving its separate identity. The G100 was presented to the trade circa early 2022, developed over the preceding years as ETA's parent Swatch Group systematically wound down movement supply to outside brands, leaving a gap in the Swiss-made automatic segment.

Rather than clone the ETA 2824-2, La Joux-Perret engineered the G100 as a proprietary design with the same 25.60 mm diameter and dimensional compatibility with ETA 2824/SW200 cases, though its 4.45 mm height is slightly thinner than the ETA 2824-2's commonly listed 4.60 mm height. Internally the movement draws conceptual cues from Citizen's own Miyota 9-series: a single-piece tungsten rotor on ball-race bearings, beryllium-copper auto-lubricating wheels, and unidirectional winding. Swiss-specification details include a KIF Parechoc shock absorber, an Etachron-style regulator with a fine-adjustment screw, and vertical dial-foot fixings.

The G100's headline figure is its 68-hour power reserve—roughly twice that of the ETA 2824-2 (38–42 h) and well above the Sellita SW200-1 (38 h)—which brands have leveraged as a marketing differentiator for weekend-wearers. Two accuracy grades are offered: Standard (±12 s/day average, ±30 max) and Soigné (±7 s/day average, ±20 max). The caliber has been adopted by a growing roster of independent and mainstream brands including Anordain, Reservoir, March LAB, Farer, and Frédérique Constant.