Pioneer Skeleton Retrograde Seconds

The Pioneer Skeleton Retrograde Seconds combines an openworked aesthetic with H. Moser & Cie.’s 30-second retrograde complication. Its 40 mm steel case houses the fully skeletonised HMC 251 Manufacture automatic calibre, revealing its bridges, wheels and engraved oscillating weight through the dial and sapphire case-back.

Beating at 21,600 vibrations per hour, the movement offers a minimum three-day power reserve and features an original Straumann® hairspring. Its anthracite finish with Moser double stripes provides a distinctive technical signature.

The retrograde mechanism drives the seconds hand across a 30-second arc before returning instantly to zero, creating a compelling display of precision, energy and mechanical control.