Main Specifications

Common Specifications

  • 3.35 cm (1.32-inches) dual layer display, Color TFT LCD (320 × 300 pixels) + Monochrome LCD
  • Capacitive touch panel
  • Microphone
  • Vibration
  • Battery:

Type: Lithium-ion battery

Charging time:

Approximately 2 hours at room temperature (Be sure to use the special charger cable and AC adaptor.)

  • Bluetooth: Bluetooth® 4.1 (Low Energy support)
  • Wi-Fi: IEEE802.11b/g/n
  • Memory & storage: 512 MB RAM, 4 GB internal storage
  • Charging method: Magnetic crimped charging terminal
  • Buttons: TOOL button, Power button, APP button
  • 5-bar (50-meter) water resistant*1
  • Environment performance: MIL-STD-810G (United States military standard issued by the U.S. Department of Defense)
  • Watch:

Auto time correction:

By communication with smartphone (Time can be adjusted manually.)

By GPS information (Can be corrected manually.)

Time zones (world time function):

Supports multiple world time zones (Types depend on system time zones.)

12/24-hour timekeeping
Full auto-calendar:

Auto switching by linking with smartphone

Summer time:

Auto switching by linking with smartphone

Watch faces:

Three favorites, more can be added.

  • TOOL App:

Compass:

Measurement range: 0° to 359°

Measurement unit: 1°

Continuous measurement duration: 1 minute

North Indication hand, Magnetic declination calibration, Bearing memory, Gradient calibration

Altimeter:

Measurement range: –700 to 10,000 m (–2,300 to 32,800 ft)

Measurement unit: 1 m (5 ft)

Measurement accuracy: within ±75 m (within ±250 ft) (When frequent manual calibration is performed)

Shortest measurement interval: 1 minute

Altitude graph: Past 24 hours

Manual altitude calibration, Auto altitude calibration using location information*2

Barometer:

Measurement range: 260 to 1,100 hPa (7.6 to 32.5 inHg)

Measurement unit: 1 hPa (0.1 inHg)

Measurement accuracy: within ±3 hPa (within ±0.1 inHg)

Atmospheric pressure tendency graph: Past 24 hours

Barometric pressure measurement interval: 1 minute

Manual barometric pressure calibration

Tide and Fishing:

Tide graph: Past 12 hours + Next 12 hours

Fishing time (Calculated according to current location, and moon hour angle and age.)

Sunrise/sunset:

Sunrise/Sunset times (Current location sunrise/sunset)

Sunrise/Sunset directions: Accuracy depends on compass

My Graph*4:

Daily activity pattern: Stopped, walking, running, vehicle

Calories burned, Steps, Altitude (Highest altitude achieved that day), Workout time

  • Screen brightness setting: 5 levels
  • Watch battery level indicator: Integer value, 0 to 100%
  • Charger (AC adaptor):

INPUT: AC 100 V to 240 V 50 Hz/60 Hz

OUTPUT: 5.0 V

  • Charger cable:

Length: Approximately 0.75 m (2.46 ft)

Type: AC adaptor USB Type A

  • Included accessories: Charger (AC adaptor), Special charger cable, Cloth band/Band replacement tool (WSD-F20X only)
  • About MIL-STD-810G (United States military standard issued by the U.S. Department of Defense):

Description:

1. Drop

2. Random Vibration

3. Humidity

4. Solar-Radiation

5. Non-Operating Altitude

6. Operating Altitude

7. Non-Operating High Temperature

8. Non-Operating Low Temperature

9. Temperature Shock

10. Icing Freezing Rain

Procedure: MIL-STD-810G, w/change1

1: Method 516.7 ProcedureⅣ

2: Method 514.7 ProcedureⅠ

3: Method 507.6 ProcedureⅡ

4: Method 505.6 ProcedureⅡ

5: Method 500.6 ProcedureⅠ

6: Method 500.6 ProcedureⅡ

7: Method 501.6 ProcedureⅠ

8: Method 502.6 ProcedureⅠ

9: Method 503.6 ProcedureⅠ-C

10: Method 521.4 ProcedureⅠ

Attention:

The functions of this watch have been confirmed under test environments, but no guarantees are made concerning operation under all environments where it may be used. Also, no guarantees are made concerning the ability of the watch to withstand damage or malfunction.

  • Phones & tablets that work with Wear OS by Google

Wear OS by Google works with phones running Android 4.4+ (excluding Go edition)*5 or iOS 10+*5*6. Supported features may vary between platforms and countries.

Visit g.co/wearcheck on your Android phone or iPhone® to see if it’s compatible.

Model Specific Specifications

 

WSD-F10

WSD-F20 Series

Sensors

Pressure sensor, Accelerometer, Gyrometer, Magnetic sensor

GPS, Pressure sensor, Accelerometer, Gyrometer, Magnetic sensor

Operating time on full charge*1

Normal use: More than one day
Timepiece Mode: Approximately one month

Operating temperature

0℃ to 40℃ (32℉ to 104℉)

-10℃ to 40℃ (14℉ to 104℉)

Crystal

Mineral glass

WSD-F20/WSD-F20X/WSD-F20A:

Mineral glass (dirt resistant coating)

WSD-F20S/WSD-F20SC:

Sapphire glass (dirt resistant coating)

Activity App

Trekking, Fishing, Cycling*7

Trekking, Fishing, Cycling, Paddle, Snow

MOMENT SETTER App

Trekking, Fishing, Cycling notifications

Trekking, Fishing, Cycling, Paddle, Snow notifications

Location Memory App

-

Map screen, route screen, selectable map skin, map downloading (off-line maps), voice memo, landmark, Revisit marks*3, history screen

Approx. Size (Body H × W × D)

61.7 × 56.4 × 15.7 mm (2.4” × 2.2”× 0.6”)

WSD-F20/WSD-F20X/WSD-F20A:

61.7 × 57.7 × 15.3 mm (2.4” × 2.3”× 0.6”)

WSD-F20S/WSD-F20SC:

61.7 × 57.7 × 15.1 mm (2.4” × 2.3”× 0.6”)

Approx. Weight (including band)

93 g (3.3 oz)

WSD-F20:92 g (3.2 oz)

WSD-F20S:105 g (3.7 oz)

WSD-F20X:94 g (3.3 oz) (including soft urethane band), 90 g (3.2 oz) (including cloth band)

WSD-F20A:90 g (3.2 oz)

WSD-F20SC:124 g (4.4 oz)

*1 CASIO test conditions

*2 GPS altitude information is used, so the indicated altitude may not exactly match the actual above sea level elevation or altitude.

*3 In order to be able to use these functions your Android phone must have the CASIO MOMENT SETTER+ app installed, and there must be a connection between the phone and watch. These functions are not supported in the case of iOS.

*4 Default: OFF

*5 Recommended. However, a WSD-F10, F20, F20S, or F20X watch that is already paired with a smartphone running Android 4.3+ or iOS 9+ can also be used.

*6 Limited functionality when connected to iOS device.

*7 Available only while the watch is connected with an Android phone.