The Lange 1 Tourbillon Perpetual Calendar was introduced in 2014. Similar to the Daymatic, it features a mirrored dial layout and automatic winding. Compared to said model it however adds the perpetual calendar, moonphase and tourbillon escapement – the latter only visible through the sapphire crystal caseback.Ref. 720.038 has a white gold case and a grey dial. It was added to the collection at SIHH 2016.
