EFSS640ZE-1A

Archive model

This product is no longer available for purchase.

Celebrate 50 years of Casio watches with a commemorative EDIFICE timepiece that sparkles with Casio passion for new value and constant innovation. 

The EFS-S640ZE embodies the spirit of craftsmanship inspired by the excitement of “making something from nothing” — the thrill of going from “0” to “1.”

This solar powered EDIFICE chronograph features a black and gold colour scheme that evokes the first flicker of light, that spark of innovative craftsmanship, where the creation of new value begins.

The gold-colour band loop, laser engraved with “50th ANNIVERSARY,” flickers on the black band like a light that breaks the darkness and illuminates the path to value innovation.

As a special design touch, the inset dial at the 9 o’clock position is printed with 0’s and 1’s, capturing the Casio devotion to the art of making something from nothing.

Based on the solar powered SOSPENSIONE EFS-S640, the watchcase in carbon fibre-reinforced resin features a unique design inspired by a formula car suspension with lugs configured in a four-arm arrangement. Together with the carbon fibre dial, this timepiece exudes a true motorsport feel. The band is made of Alcantara, a highly durable and breathable material used in the interior of sports cars. With its international certification for carbon neutrality, the fabric is also expected to help reduce environmental impact.

Basic Information

  • Band
    Alcantara material band
  • Case and bezel material
    Carbon / Stainless steel / Aluminum
  • Case size (L × W × H)
    50.1 × 44.5 × 13.8 mm
  • Power supply and battery life
    Solar powered
  • Water resistance
    100-metre water resistance
  • Weight
    61 g

Exterior

  • Compatible band size
    175 to 215 mm
  • Glass
    Sapphire crystal with anti-reflective coating

Features

  • Accuracy
    Accuracy: ±20 seconds per month
  • Battery display alert
    Battery level indicator, Low battery alert
  • Other features
    Regular timekeeping:
    Analog: 3 hands (hour, minute, second), 3 dials (24-hour, stopwatch minutes, stopwatch seconds)
    Date display
  • Run time
    Operating time from full charge until hands stop: Approx. 5 months
  • Stopwatch
    1-second stopwatch
    Measuring capacity: 29'59
    Measuring modes: Elapsed time, split time, 1st-2nd place times

Feature List

  • Black icon of a snorkeler swimming horizontally next to the number 10, indicating a 10-bar water resistance rating.

    10 bar water resistant

  • Black icon of a smartwatch charging via solar energy with a battery level indicator and sun rays.

    Stable solar power

  • Extra tough band

  • Minimalist black icon of a wristwatch with a white circular face featuring the word SPORTY in bold black text.

    Sporty design

  • Limited model