This platinum-cased re-issue of the world’s first selfwinding wristwatch features a distinctive winding and time-setting system. Instead of a crown, it comes with a substitute mechanism that serves to rewind the movement and reposition the hands by rotating the fluted bezel in either direction. The blue dot at 6 o’clock on the dial provides an indication of mainspring tension. Also available in steel, steel with 18K gold bezel and solid gold. Arabic or Roman numerals.