Grand Seiko has released its first mechanical complication watch, the Kodo Constant-force Tourbillon, which is the first timepiece to combine a tourbillon and a constant-force mechanism into a single ...

Grand Seiko made its debut at Watches & Wonders this spring by debuting its first tourbillon and its most complicated watch ever, the Kodo Constant-Force Tourbillon. It was among the luxury brands ...

But first, let’s get you up to speed on the background of this technology. Pruniaux likens the idea to running a marathon. The average person might start running quickly at the beginning and then get ...