====== A. Lange & Söhne Datograph Perpetual (2026) ====== {{wst>image_cr|A. Lange & Söhne|Datograph Perpetual (2026)}} {{wst>image_cr|A. Lange & Söhne|Datograph Perpetual (2026) RS}} The **Datograph Perpetual** is a wristwatch from [[A. Lange & Söhne]]. [[2006]], Lange had presented the first version of the [[A. Lange & Söhne Datograph Perpetual|Datograph Perpetual]]. This supplemented the [[A. Lange & Söhne Datograph|Datograph]] original model from [[1999]], a [[flyback chronograph]], with the additional [[complication]] of a [[perpetual calendar]]. In the [[platinum]] version from [[2026]], the hour markers are represented by eleven [[diamonds]] in a [[baguette cut]]. The five-row platinum bracelet with a folding clasp forms a harmonious whole with the case. The watch is limited to 50 pieces. **Reference:** * 410.136E [[platinum]] black **Movement:** * [[Hand-winding]] movement [[Lange L952|L952.1]], 18,000 A/h * [[Chronograph]] in classical [[column-wheel]] design with [[flyback]] function * [[Big date]], [[small seconds]] * 45 [[jewels]] * 4 screwed gold [[chaton]]s * [[Swan's neck fine regulation]] * Plates and bridges in untreated [[Nickel silver]] * [[Balance cock]] engraved by hand * 556 components * Power reserve 36 hours **Case:** * [[Platinum]] * Ø 41 mm, height 13.5 mm * [[Sapphire crystal]] * Caseback with [[sapphire crystal]] sighting window **Dial:** * Black * Rhodium-plated sub-dials * Day, month, and leap year hands in 750 gold * Chronograph minute counter and small seconds hand in [[blued]] steel * Rhodium-plated steel chronograph seconds hand * Eleven hand-set baguette-cut diamonds with a total weight of approximately 0.13 carats form the hour markers: a pair of diamonds marks the 12 o’clock position **Functions:** * Hours, minutes, [[small seconds]] with [[stop-seconds]] at 8 * [[Flyback]] chronograph with a 60-second counter as the [[central seconds]] hand and a precisely [[jumping]] 30-minute counter at 4 * [[Perpetual calendar]] with [[large date]] at 12 o’clock, day of the week, month, and leap year * [[Day/night indicator]] * [[Moon phase indicator]] at 6 o’clock **Bracelet:** * Five-row platinum bracelet with a folding clasp **Limited Edition:** * 50 pieces {{tag>Watch_models Chronographs Watches_with_moon_phase Watches_with_perpetual_calendar A._Lange_&_Söhne_models A._Lange_&_Söhne_Datograph_models}}