NOMOS Glashütte Ahoi

The NOMOS Ahoi, reference 550, has a steel case measuring 40.3 mm in diameter. The automatic DUW 5001 calibre has up to 43 hours of power reserve and is visible through a sapphire crystal case back. A screw-down crown is set into the case, which measures 10.6 mm high and 51 mm lug-to-lug. The case is water resistant to 200 metres and has a domed sapphire crystal. A blue-black woven textile strap has a buckle. The white silver-plated dial carries Super-LumiNova on the indexes and rhodium-plated hands, with a neon orange hand in the small seconds sub-dial.