This series of square watches is worn by men and women alike. Also in this model a fine Glashütte manufacture calibre with manual winding and various watchmaking refinements is ticking.

In March 2007 Nomos presented a watch series called Tetra² with 16 colored variations of the Tetra. All 16 Tetra² models are named after flowers Tausendschön, Männertreu, Adonisröschen, Knabenkraut, Tausendgüldenkraut, Fleißiges Lieschen, Mispel, Hasenohr or also Gurkenkraut and Sumpfkratzdistel (Daisy, Lobelia, Pheasant's Eye, Wild Orchid, Centaurium, Impatiens walleriana, Medlar, Rabbit Ear, Borage, and Marsh Thistle).