NOMOS Glashütte Ahoi Collection Stainless Steel & Textile Strap 36.3MM neomatik Siren Blue Watch. This watch features a stainless-steel case, with curved sapphire crystal glass front and back on a light gray textile strap. The dial is siren blue with hour indexes with superluminova blue and orange second hand. The movement is the house built DUW 3001 with automatic winding and date indicator. NOMOS Glashütte swing system with tempered blue balance spring. This watch also has an approximate 43-hour power reserve. Water-resistant to 200 meters.