Type 20 Annual Calendar

48 mm


Annual calendar associated with the legendary El Primero chronograph
Screwed-in crown
Case-back engraved with Zenith flying instruments logo
Find a boutique Add to the wish list
Close the pop-up
Variations 1/1
  • MovementEl Primero 4054, Automatic
  • Calibre13¼``` (Diameter: 30 mm)
  • Thickness8.30 mm
  • Components341
  • Jewels29
  • Frequency36,000 VpH (5 Hz)
  • Power reservemin. 50 hours
  • FinishingOscillating weight with “Côtes de Genève” motif
    One-counter chronograph
    - Central chronograph hand
    - 60-minute counter at 6 o'clock
    Date indication at 6 o'clock
    Hours and minutes in the centre
    Small seconds at 9 o'clock
    Day/month indication at 3 o'clock
  • MaterialStainless steel
  • Diameter48 mm
  • Thickness15.80 mm
  • CrystalDomed sapphire crystal with anti-reflective treatment on both sides
  • Case-backCase-back engraved with the Zenith flying instruments logo
  • Water-resistance10 ATM
  • DialMatt black
  • Hour-markersArabic numerals in SuperLuminova SLN C1
  • HandsBlack ruthenium-plated and satin-finished
  • Strap
  • Brown alligator leather strap with protective rubber lining
  • Clasp
  • Stainless steel pin buckle
  • Louis Bleriot

    Louis Blériot

    Crossing the english channel

    On July 25, 1909, Louis Blériot achieved a feat crossing the Channel aboard the Blériot XI, wearing his trusty Zenith watch.

    More information

  • Swiss watch Manufacture

    Tour the manufacture

    At the heart of expertise

    The Zenith Manufacture still operates in same place where it was founded in 1865. Today it accommodates 80 watchmaking professions.

    More information


    A vast network of service centers
    around the world is at your
    disposal so that you may benefit
    from the expertise of watchmakers
    who are properly trained to maintain
    and repair your watch, and to restore
    vintage timepieces.