Swiss Concept's Speed Bracelets feature the Classic Dual Time GMT II Series, Submariner Series and Classic Roman Numeral Series, with a variety of editions within each line. Each model is hand-assembled and made from 316L stainless steel, with either a polished finish, 18 karat black gold finish, 18 karat rose gold finish or 18 karat yellow gold finish, all inspired by designs and components of the finest high-end watches at the pinnacle of the Swiss watchmaking industry.