Armin Strom Gravity Date Fire RG14-DF.90

Inside is the ADD14, an automatic calibre made in-house and wound by a micro-rotor, with a five-day power reserve. The date pointer and the day/night indicator share one opening, and because the 24-hour display sits on the same axis as the date, the date is easier to set. The case is 43.4 mm across and 13 mm thick, with a skeleton dial under sapphire.

The element names follow the case metal. The Gravity Date Air (TI14-DA.50) is titanium, the Water (ST14-DW.50) stainless steel and the Earth (ST14-DE.90) black PVD-coated steel. The Gravity Fire (RG13-GF.90) has the same rose gold case on the AMR13 calibre, without the date and day/night display. The Tourbillon Gravity Fire (RG14-TF.M.90) replaces both with the ATM13 tourbillon calibre and comes in a run of 50.