The A. Lange & Söhne Datograph Perpetual Tourbillon ~ Functions: Perpetual Calendar – Chronograph – Moon Phase – Tourbillon ~ Case: 41.5mm – White Gold – 14.6mm Thick ~ WR: 30M ~ Movement (L952.2) 50-Hour Power Reserve – Hand Wound – 18,000 vph – 59 Jewels ~ MSRP: £245,200