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CASIO

CASIO LW-204-1ACF digital watch black resin 21

SKU CH-31ZD-M4K8Z

A lightweight 24 g digital watch with 50 m water resistance, 1/100-second stopwatch, countdown timer, LED backlight and flash alert alarms

  • 1/100-second stopwatch for precise timing
  • LED backlight with afterglow for low-light reading
  • 50 m water resistance handles splashes and brief immersion
  • Flash alert plus buzzer for clear alarm signals
  • Approx. 3-year battery life on CR2016 cell

Casio LW-204-1ACF Digital Watch

The Casio LW-204-1ACF is a compact digital watch with a black resin case and strap, designed for everyday wear. It weighs 24 grams and measures 38.9 × 35 × 9.4 mm. A rose gold-tone bezel adds a subtle accent. Quartz movement provides reliable timekeeping in 12 or 24-hour format.

Replacing Basic Time-Only Watches

This model adds a 1/100-second stopwatch, a 24-hour countdown timer and multiple daily alarms with flash alerts and buzzer tones. An hourly time signal and a full auto-calendar running to 2039 extend utility beyond simple time display. The jump is worth it when you need interval timing, reminders or low-light readability without a phone.

50-Metre Water Resistance Limits

Rated to 50 metres, the watch withstands splashes, rain and brief immersion such as hand-washing or surface swimming. It is not intended for diving, snorkelling or high-velocity water sports. The CR2016 battery lasts approximately three years; the LED backlight with afterglow aids reading in darkness but does not replace a dedicated dive light.

Highlights

  • 1/100-second stopwatch for precise timing
  • LED backlight with afterglow for low-light reading
  • 50 m water resistance handles splashes and brief immersion
  • Flash alert plus buzzer for clear alarm signals
  • Approx. 3-year battery life on CR2016 cell

Specifications

No published specifications for this item yet.

Questions about this item

What size wrist does the 21 mm resin strap fit?

The 21 mm resin strap is designed for smaller wrists and the watch weighs 24 grams for comfortable daily wear.

How do I change the CR2016 battery without losing water resistance?

Have the battery replaced by a watchmaker who can reseal and pressure-test the case to maintain the 50-meter rating.

When will the auto-calendar stop working and what maintenance is needed then?

The full auto-calendar runs until 2039; after that you will need to set the date manually.

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