Watch Catalog

Casio Collection LF-20W-1A

Black, 37.8 × 33.7 mm, module 3551.

  • Japan: LF-20W-1AJF
  • Module 3551
  • 37.8 × 33.7 mm
  • 30 m
  • Resin Glass
  • $30

Specifications

Module
Casio module 3551, quartz · how to set it
Power
Approx. battery life: 3 years on CR1616 · other watches that take CR1616
Accuracy
±30 seconds per month
Case size
37.8 × 33.7 mm (length × width)
Thickness
8.6 mm
Case
Resin
Crystal
Resin Glass
Water resistance
30 m
Weight
23 g
Strap
Bio-based resin band
Colour
Black
Features
12/24-hour format, Alarm/hourly time signal, Calendar, Light, Light color, Mute feature, Stopwatch, Timer, World time
Released
2023-05
Series
Casio Collection

Questions

What is the Japanese model number of the Casio LF-20W-1A?

Casio's Japanese site names it the LF-20W-1AJF: the same watch, its code with the Japanese market suffix.

What module is in the Casio LF-20W-1A?

Module 3551, a quartz movement. The module number is engraved on the caseback, and Casio's operation manual is filed under it: the module page links the manual and lists every watch that shares it.

What battery does the Casio LF-20W-1A take?

CR1616. Casio's figure: Approx. battery life: 3 years on CR1616.

Does the Casio LF-20W-1A have a sapphire crystal?

No. The LF-20W-1A has a Resin Glass crystal.

How water resistant is the Casio LF-20W-1A?

30 m (3 bar). That covers rain, splashes and hand washing, not swimming.