Cal. L21 is a compact hand-winding watch movement with date produced by Landeron Swiss Movements. The 11.5 ligne movement operates at 28,800 A/h and offers 36 hours power reserve. A date complication is positioned at 3:00 on the dial.
Cal. L21 is similar to the ETA 2804-2 or Sellita SW215-1, which have similar specifications and very similar appearance.
Cal. L21 was listed on the Landeron Swiss Movements website in 2020 but is no longer listed as of 2022.