When it comes to power reserves, you probably thought that the 7-day IWC’s or the 8-day Panerai’s were already massively powerful – and obviously, they have more power than 99% of the mechanical watches produced. Well, if power is your thing and you simply hate winding your watch, you might want to consider the Lange 31. Keep in mind the ’31’ does not refer to the diameter of the watch but rather the length of its power reserve … in days. Yes, this watch can run for 31 days, from a single barrel, when fully wound. Impressive, right?
Case: 45.9mm diameter x 15.9mm height – 18k white gold case, polished and brushed – sapphire crystal on both sides – 30m water resistant / Movement: Calibre L034.1, in-house developed and produced – hand-wound, specific tool to wind the movement – 3Hz frequency, constant force device – 31-day/744-hour power reserve – 37.3mm x 9.6mm – hours, minutes, small second, power reserve, oversized date / Strap: Dark brown alligator strap, white gold folding clasp / Reference: 130-039, limited to 100 pieces