Housed in an 18-carat white gold case measuring 38.5mm across and rated to 3 bar of water resistance, the Langematik Perpetual ref. 310.028 E presents its blue dial as a refined canvas for an impressive array of complications. The display incorporates an outsize date, a full perpetual calendar function, a moon-phase display, a day/night indicator, a day-of-week display, and a zero-reset mechanism — all rendered with the discipline of proportion that defines A. Lange & Söhne's approach to dial architecture.
Powering the watch is the self-winding caliber L922.1, a movement composed of 478 individual parts oscillating at 21,600 semi-oscillations per hour (3.0 Hz) and delivering a power reserve of 46 hours. The movement designation and its 478-component count speak to the engineering depth concentrated within the 38.5mm footprint.
The watch is worn on a dark blue alligator leather strap — sourced from farmed alligator mississippiensis in full compliance with CITES Appendix II regulations — secured by an 18-carat white gold prong buckle that echoes the case material throughout the piece.
