{"product_id":"a-lange-sohne-saxonia-lange-31-130-039f-white-gold-grey-dial-limited-edition-of-100-2026","title":"A. Lange \u0026 Söhne Saxonia Lange 31 130.039F White Gold Grey Dial Limited Edition of 100 (2026)","description":"\u003cp\u003eLimited to 100 pieces and sold only through Lange boutiques, the Lange 31 130.039F is the White Gold and Grey dial edition, presented at SIHH 2017, of the watch A. Lange \u0026amp; Söhne introduced in 2007 as the first mechanical wristwatch to run for 31 days on one winding. A patented constant-force escapement delivers an identical impulse to the balance every ten seconds, from the first day of the month to the last.\u003c\/p\u003e\u003cp\u003eTwo stacked mainsprings store the energy, and the watch is wound with a supplied key rather than the crown. The Grey dial of solid silver shows Lange's outsize date, a small seconds and a large power-reserve indicator ending in a white 31, with the word Monatswerk, German for monthly movement, beneath the date. The 45.9 mm White Gold case is 15.9 mm high, on a brown alligator strap with a White Gold deployant buckle.\u003c\/p\u003e","brand":"A. Lange \u0026 Söhne","offers":[{"title":"Default Title","offer_id":67898859782388,"sku":"P7706S","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0266\/7141\/5373\/files\/a-lange-sohne-saxonia-lange-31-130-039f-white-gold-grey-dial-limited-edition-of-100-2026-a-lange-sohne-1264340962.jpg?v=1792927569","url":"https:\/\/wristaficionado.com\/products\/a-lange-sohne-saxonia-lange-31-130-039f-white-gold-grey-dial-limited-edition-of-100-2026","provider":"Wrist Aficionado","version":"1.0","type":"link"}