Hodinkee gives us a look at A. Lange & Söhne’s Datograph UP/DOWN, ahead of its official 2012 SIHH release. With a completely in-house movement, the latest variation of this timeless beauty continues to amaze, this time featuring a power reserve indication at 6 o’clock. The new Datograph comes in a larger case size, 41mm compared to 39mm, and houses a longer power reserve — 60 hours instead of 38. Look for the A. Lange & Söhne Datograph UP/DOWN to make a big splash at SIHH next month. More details over at Hodinkee.