The Tissot 26.R 621 is a detached manual wind movement that was used around the 1950s. It features the Wyler-Incaflex, a shock protection system that utilizes elastical spiral balance spokes. The movement does not require an Incabloc on the dial side, specifically at the shorter section of the balance staff. Additionally, the movement incorporates several functions, including automatic winding, a sweep second hand, and a power reserve display lasting up to 36 hours.