Lange just unveiled the Datograph Auf/Ab. The most evident changes over the outgoing model is the new 41 mm case and a power reserve of 60 hours thanks to a larger barrel. Also the dial now has batons instead of Roman numerals. The current model on the other hand has a 36 hour power reserve and a 39 mm case.
The Datograph also now has the in-house Lange balance wheel with adjustable weights.


The pictures indicate Lange has retained the classic Datograph proportions though I'm unsure about the baton indices. I'm definitely looking forward to seeing this in a few weeks in Geneva.
- SJX



This message has been edited by SJX on 2011-12-20 00:16:25 This message has been edited by SJX on 2011-12-20 00:23:03