All Entries Tagged With: "Silicon balance wheel"

De Bethune DB25 Moon Phase With Silicon Balance Wheel

This latest addition to De Bethune’s DB25 family is fitted with a new hand-wound mechanical caliber with a six-day power reserve, based on the DB2105 movement. The silicon balance wheel, used for the first time in a production movement, is the product of research undertaken since 2002 focused on improving the oscillator. Together with the balance spring with the De Bethune flat terminal curve, the two form an oscillating assembly that marks a new step forward in the quest for isochronism, a precisely uniform rate.