It is probably the replica a lange sohne 1815 Chronograph watches most complex watch case ever made.As Maximilian Büsser explains in his press release, it has been the greatest challenge he and his partner Serge Kriknoff encountered in their 20 years of experience in horology. The titanium case back needed over 60 hours of machining and finishing and the central sapphire case part took even over 150 hours of machinery and polishing.The Thunderbolt is a result of a life-time fascination that Max Büsser has for the world of aeronautics. As a young kid, he had a big passion for modelling air planes, modifying them, painting them, and so on. This Horological Machine No.4 has its roots in this very early passion of Max and is a mixture of haute horlogerie and aeronautics. Obviously.Max wearing his ultra high end master piece! Make sure to follow MB&F on Facebook. Click here. Today, MB&F unveiled the Horological Machine No2-SV (Sapphire Vision) according to plan. Since early 2008, I am following Maximilian Busser and Friends with great interest and have reported several times on their extreme cool creations.The HM2 SV edition gives away part of the secrets and inner workings of their Horological Machine Number 2 by using sapphire crystal to cover the entire front of the timepiece as you can see on the picture above.Sapphires hardness is second only to diamond, which makes the whole top half of the case (the most exposed half) extremely scratch-resistant. This is a timepiece that will keep its good replica a lange soh replica chopard Mille Miglia Rubber Strap watches looks for a very, very long time. The 3.6mm thick sapphire crystal consist out of a top plate that has been constructed out of three separate parts. It takes up to 55 hours to create just a single top plate of sapphire. Actually, Stettler in Lyss (Switzerland) was the only manufacturer of sapphire crystals that accepted the challenge and managed to fulfil this task in a perfect way, so I guess they are worth mentioning here To ensure maximum light and visibility through to the movement, the two dials minutes and date are also in sapphire, sapphire disks lightly brushed to a perfect translucency ensuring full legibility of the polished silvered numbers while allowing maximum light through to the engine beneath.The movement of the HM2-SV, has been developed by master watchmaker J.M Wiederrecht, it feature an instantaneous jump hour, concentric retrograde minutes, retrograde date and a bi-hemisphere moon phase. My personal favorites are MB&Fs (including Sage Vaughn) HM2 contribution to the Monaco Only Watch event and the recently introduced HM 2.2 BlackBox model that MB&F created together with replica audemars piguet Royal Oak Of Alain Silberstein.On the 6th of January, MB&F announced the upcoming introduction of a 25 piece only HM2, which is today, on January 12th of 2010.