• Movement

• Automatic

• Case

• Platinum

• Dial

• Silver

• Strap / Bracelet

• Black crocodile strap

• Mfg Ref #

• 310.025

A. Lange & Sohne Langematik Perpetual Automatic Platinum (310.025)

The A. Lange & Sohne Langematik Perpetual (ref. 310.025) is the first automatic wrist watch with a perpetual calendar, large date, and “zero reset” mechanism that allows the calendar and moonphase subdials to be advanced individually and, with the push of a single button, collectively as well. The Langematik Perpetual features a mechanical automatic movement; rhodiumed silver dial with Lange's patented large date display; sapphire-crystal, transparent case back; and 38.5mm, platinum case on a hand-stitched, black crocodile strap with a platinum ardillon buckle.