This year at the SIHH 2015, A. Lange & Söhne presented a new iteration of the Lange 1. This new Lange 1 includes a slimmer bezel, a bigger balance wheel and some minor typography changes that are really hard to even notice. Here's our review of the A. Lange & Söhne Grand Lange 1 to see if you can spot the differences. Some of the main differences have to do with the thickness of the ALS font, the size of the letter 'I' after Glashütte and even the font on the 'Doppelfederhaus' writing at 6 o'clock. Ever since the first collection of the new era was presented in 1994, the Lange 1 has been the face of A. Lange & Söhne. Largely unchanged as regards its design, the second generation is endowed with a new manually wound calibre and a precisely jumping outsize date. It advances by one day exactly at midnight and therefore always delivers a doubt-free reading. Fitted with a very traditional case size measuring 38.5 mm in diameter and 9.8 mm in thickness, the Lange 1 is a watch that reflects Lange's DNA flawlessly.

The new Lange 1 is available in three different metal variations: platinum ref. 191.025—rhodié dial and black alligator strap—, 18K pink gold ref. 191.032—argenté dial and dark brown alligator strap— and 18K yellow gold ref. 191.021 —champagne dial and light brown alligator strap.

Featured in these post is the 18K yellow gold reference with champagne dial. As it is the norm with A. Lange & Söhne timepieces, the dial is made of solid silver and the Lange 1 features off-centered hours and minutes; subsidiary seconds with stop seconds; oversized double date and Up/Down power-reserve indicator at 3 o'clock.

Visible via the display case back is the new in-house manual wound calibre L.121.1 with bigger balance wheel. This calibre is composed of 368 parts and 43 jewels —8 of which are screwed in gold chatons. The movement features a shock-resistant balance wheel with eccentric poising weights; balance spring manufactured in-house with a frequency of 21,600 vph, precision beat adjustment system with lateral setscrew and whiplash spring. The calibre provides a power reserve of 3 days when fully wound.

Sticker Price 29,800 Euro for 18K Pink and Yellow Gold and 42,300 Euro for Platinum. For more info on A. Lange & Söhne click here.