A. Lange & Söhne kicked off the fair with a spectacular evolution of its Tourbograph; the original watch was presented in 2005. It was the first time that Lange combined the fusée-and-chain transmission with a tourbillon escapement, and it also included a rattrapante chronograph. At the time, it was only the second timepiece to gain the “Pour le Mérite” moniker, which Lange has very sparingly used, highlighting the fuséeand-chain but also the fact that this is one of the maison’s ultimate watches, the most complex wristwatch it had yet produced. This year, it goes even further, with the fifth Pour le Mérite piece: the Tourbograph Perpetual. At first glance, it might look very similar to the 2005 watch, but the devil is in the details. Lange has included a perpetual calendar that is very well integrated and doesn’t overpower the dial even with the additional indications. Within, almost one third of the movement’s 684 parts are dedicated to the perpetual calendar alone. It does mean that the new Tourbograph is slightly larger, at 43.0mm, compared with its predecessor’s 41.2mm case, but it’s unlikely to deter the serious Lange collector from adding it to his or her arsenal.