Casio WS-1300 — Tide Graph, Moon Data and LED light

Rating: 3 out of 5.
Battery Years★★★★★
How did we compose this rating? Enjoy our calculations →

About WS-1300 in Short. Water lovers take note! The ideal companion for anyone into marine sports. These watches start with a durable exterior design, 100-meter water resistance, and 10-year battery life . Then add on-board tide graph, moon data, and LED light ensuring an easy read even in the dark, to deliver everything a water sports enthusiast needs, right at your fingertips.

General Information

Price$25  *average Amazon Price, we may earn commission from purchases
Year of First Release2021
Model RangeCasio Digital Collection
Battery Type CR2025 (Casio Batteries)
Manual3507 (official)

WS-1300 Model Range *may be updated

*Want to be the first to know about new Collection Updates? Here we store all recent Monthly Collection Updates →

Other Casio Digital WS Watches *similar by price and functions but different by cases

These are not all Casio Digital WS Series. Here is a list of All Casio Digital WS Watches →

Casio WS-1300 Display Guide *for key functions only. For you to know how it works))


  • Press C to change from mode to mode
  • In any mode (except when a setting screen is on the display). press B to illuminate the face of the watch
  • In the Timekeeping Mode, holddown A until the seconds start to flash, which indicates the setting screen
  • Press C to move the flashing.

Moon/Tide Data

In the Moon/Tide Data Mode, press A to toggle between the tide data screen and the Moon data screen.
– The tide graph shows the tide for the currently displayed time. The initial tide data screen shows the level for 6:00 a.m. The Moon data screen shows the Moon age and Moon phase for the current date.


You can set the countdown timer within a range of one minute to 24 hours. An alarm sounds when the countdown reaches zero.
– You can also select auto-repeat, which automatically restarts the countdown from the original value you set whenever zero is reached.
– All of the operations in this section are performed in the Timer Mode, which you can enter using C.

Dual Time

  1. Press C to enter the Dual Time Mode
  2. In the Dual Time Mode, hold down A until the DST setting starts to flash, which indicates the setting screen
  3. Press C to move the flashing in the sequence to select the other settings
  4. When the setting you want to change is flashing use B and D to change it
  5. Press A to exit the setting screen.

Official WS-1300 Specs / Features *for base version WS-1300H-8

  • Case / bezel material: Resin
  • Resin Band
  • Resin Glass
  • 100-meter water resistance
  • LED light
    Selectable illumination duration (1.5 seconds or 3 seconds), afterglow
  • Moon data (Moon age of the input data, Moon phase graph)
  • Tide graph (Tide level for specific date and time)
  • Dual time
  • 1/100-second stopwatch
    Measuring capacity: 23:59’59.99”
    Measuring modes: Elapsed time, split time, 1st-2nd place times
  • Countdown timer
    Measuring unit: 1 second
    Countdown range: 24 hours
    Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
    Others: Auto-repeat
  • Multi-function alarms
    3 independent multi-function alarms (2 one-time alarms and 1 snooze/one-time alarm)
    Alarm type: Daily alarm, date alarm, 1-month alarm, monthly alarm
  • Hourly time signal
  • Full auto-calendar (to year 2099)
  • 12/24-hour format
  • Button operation tone on/off
  • Regular timekeeping: Hour, minutes, seconds, am/pm, month, date, day
  • Accuracy: ±30 seconds per month
  • Approx. battery life: 10 years on CR2025
  • Size of case : 51.3×51.1×14.8mm
  • Total weight : 49g

You ask, we answer…

What does 100-meter water resistance in WS-1300 mean?

The watch is good for swimming but not for deep diving.

What type of battery does WS-1300 have?

10 years CR2025.

What does Stopwatch in WS-1300 do?

Measuring capacity: 23:59’59.99”
Measuring modes: Elapsed time, split time, 1st-2nd place times.