NOMOS Glashütte Tetra 27

The NOMOS Tetra 27, reference 401, has a square steel case measuring 27.5 x 27.5 mm. The hand-wound DUW 4001 calibre has up to 53 hours of power reserve. The movement includes the NOMOS swing system and DUW regulation system. The white and gray silver-plated dial has tempered blue hands and a small seconds sub-dial. The case is 6.1 mm thick and 38.5 mm lug-to-lug, with water resistance rated at 50 metres. The strap is black Horween Shell Cordovan leather.