NOMOS Glashütte Tetra 27

The NOMOS Tetra 27, reference 401.GB, has a 27.5 x 27.5 mm square steel case. The white and gray silver-plated dial has tempered blue hands and a small seconds sub-dial. A sapphire crystal covers the dial, and the case back is also sapphire crystal. At 6.4 mm thick, the case measures 38.5 mm lug-to-lug and has water resistance rated at 50 metres. The black leather strap is Horween Shell Cordovan. The hand-wound DUW 4001 calibre has up to 53 hours of power reserve.