Nomos Glashütte Expands Tetra Collection Written byWatchTimeJuly 10, 2012 German brand Nomos Glashütte is adding new colors to its Tetra watches, a collection of square timepieces. The watch had previously only been available in white, but they have now added four variations: Tetra weltweiß (world white) and himmelblau (heavenly blue), Tetra biskuit (scone) and zartbitter (bittersweet). All four have rhodium-plated hands, with the movement visible through the back, except for the “world white” version, which has a stainless steel back. The Nomos Tetra in “himmelblau” (heavenly blue) The Tetra weltweiß (world white), Tetra zartbitter (bittersweet), and Tetra biscuit (scone)