After initially launching the Tourbillon Gravity “Fire” (rose gold) this past December, Armin Strom subsequently revealed the remaining three models from the collection at Baselworld in March 2014.
The collection consists of four models: rose gold “Fire”, titanium “Air”, steel “Water”, PVD steel “Earth.” The Tourbillon Gravity is an in-house manufactured, open-worked self-winding tourbillon with a 110-hour power reserve.
Notably, the micro-rotor that winds the mainspring, is visible on the dial side of the watch at 1 o’clock. Also visible on the dial side, is the 60-second tourbillon with a ring indicating the small seconds. The dial consists of a white ring with hand-applied Arabic numerals for 12, 3, 6, and 9. The remaining hours, and the minutes, are marked by printed numerals and indexes.
The hands-on images above are all of the “Water” models which come in a stainless steel case measuring 43.40 mm in diameter by 13 mm thick. The fixed bezel is polished, as is the top of the lugs, and the sides of the case are brushed. There are sapphire crystals front and back, both with anti-reflective coatings. Large polished steel hour and minute hands display the time and feature white luminous material.
All of the timepieces in the Tourbillon Gravity collection are powered by automatic caliber ATM13, which is made in-house at the Armin Strom manufacture in Biel/Bienne, Switzerland. The movement features a tourbillon, a 110-hour power reserve, and a frequency of 2.5Hz. It consists of 197 total components, 26 of which are jewels (3 of which are visible on the dial side). The movement features Haute horology hand-finishing, including circular Geneva stripes and perlage, as well as hand-engraving on the back (a signature of all Armin Strom timepieces).
The Armin Strom Tourbillon Gravity Water will be delivered with a genuine dark blue alligator horn-back strap and double-fold clasp in stainless steel, as well as an additional dark blue rubber strap. The crown is non-locking and water resistance is rated to 50 meters. The retail price is $89,800. Limited to 50 pieces. (Ref. ST14-TW.M.50)