Chaykin SC02C: A Civilian Chronograph Born from Roscosmos Spacewalks

Key points

• The SC02C is a civilian adaptation of a chronograph developed since 2018 in collaboration with Roscosmos for use during spacewalks.
• Prototypes were tested aboard the International Space Station and during four extravehicular activities, with the latest test occurring on May 27, 2026.
• The watch features a 44mm x 14.5mm stainless steel case with a unidirectional bezel, reverse dovetail sapphire crystal, and antimagnetic protection rated to 4,800 A/m.
• It is powered by the hand-wound K.20-5 caliber, based on the historic Poljot 3133 movement, with 60 components manufactured by Chaykin and a 45-hour power reserve.
• The SC02C is limited to 28 pieces and includes two black fabric straps, one of which is extended to fit over a spacesuit.

Background

Mechanical watches have a long history in space exploration, with the Strela watch worn by Alexei Leonov during the first human spacewalk in 1965 powered by a movement that preceded the Poljot 3133 family. Chaykin’s SC02C continues this legacy by focusing on the specific demands of extravehicular activity rather than just orbital station use.

Why it matters

The SC02C offers a rare opportunity for collectors to own a watch that was not merely inspired by space exploration but was actually developed and tested for professional use in space, bridging the gap between aerospace engineering and high horology.

What to watch

The price for the 28-piece limited edition of the SC02C is yet to be confirmed, and the watch is expected to be available through Konstantin Chaykin’s official channels.