Union Glashütte UNG-59.S1

The UNG-59.S1 is Union Glashütte's in-house manual-winding chronograph caliber. It measures 30mm in diameter and 7.53mm thick, operates at 28,800 vph with a 60-hour power reserve, and contains 25 jewels. Features include a silicon escapement spring, indexless regulation, and a date display with a 60-second, 30-minute, and 12-hour chronograph function. The movement remains in production.