A. Lange & Söhne Minute Repeater Perpetual

The A. Lange & Söhne Minute Repeater Perpetual, reference 607.091FE, combines a minute repeater and perpetual calendar in a 40.5 mm case. This 950 platinum model is a limited edition of 50 pieces. The black dial is enamel and carries an outsize date, moon-phase display, day/night indicator and day-of-week display. The case measures 12.1 mm high, has a see-through back and carries a water-resistance rating of 20 metres. A black alligator leather strap closes with a 950 platinum folding clasp. Manual-winding calibre L122.2 contains 640 parts, has a 72-hour power reserve and beats at 21,600 semi-oscillations per hour.