NOMOS Glashütte Tetra 27 duo

The NOMOS Tetra 27 duo, reference 410, has a 27.5 x 27.5 mm steel case. The white silver-plated dial has tempered blue hands and light gray areas at the minute track and centre. A hand-wound DUW 4001 Duo calibre has up to 53 hours of power reserve and the NOMOS swing system. The case measures 6.1 mm high and 38.5 mm lug-to-lug, with 18 mm between the lugs. The case's water resistance is rated at 50 metres. The Tetra 27 duo has a black Horween Shell Cordovan leather strap.