Design & Technology

Advanced technology and design supporting superior performance.

Compact design

Miniaturisation of internal parts has made substantial downsizing possible while maintaining superior operability.
The new WSD-F30’s perfect fit on slim wrists widens its appeal to include women,
and its remarkable wearing comfort makes it ideal for use over extended periods.
Visibility has also been enhanced, moreover, by adopting a high-clarity OLED display.

WSD-F30 F20 Compare

Bezel diameter 52.9 mm 49.1 mm -3.8 mm
Case length 61.7 mm 60.5 mm -1.2 mm
Case wide 57.7 mm 53.8 mm -3.9 mm
Case thickness 15.3 mm 14.9 mm -0.4 mm
Military Standard compliance

Military Standard compliance*1

The WSD-F30 conforms to the MIL-STD-810G standard for durability established by the U.S. Department of Defence.
CASIO has confirmed that it operates properly in widely varied environments, meeting users’ toughest outdoor needs.

  • * This movie is for simulative purposes. The environment shown differs from the actual durability test environment.
  • * Some tests are conducted according to Test conditions based on the MIL Standard. Test results do not guarantee freedom from breakage or other problems.
  • *1 Nine items tested under military specification MIL-STD-810G at National Technical Systems: • Shock: Tested to meet MIL-STD-810G Method 516.7 Procedure IV. • Vibration: Tested to meet MIL-STD-810G Method 514.7 Procedure I. • Humidity: Tested to meet MIL-STD-810G Method 507.6 Procedure II. • Low-pressure transport: Tested to meet MIL-STD-810G Method 500.6 Procedure I. • Low-pressure operation: Tested to meet MIL-STD-810G Method 500.6 Procedure II. • High-temperature transport: Tested to meet MIL-STD-810G Method 501.6 Procedure I. • Low-temperature transport: Tested to meet MIL-STD-810G Method 502.6 Procedure I. • Temperature shock: Tested to meet MIL-STD-810G Method 503.6 Procedure I-C. • Ice accretion: Tested to meet MIL-STD-810G Method 521.4 Procedure I. (The device has been tested to perform under test conditions, but is not guaranteed to operate under all conditions in actual use. Not guaranteed against damage or accidents.)
5-bar water resistance

©Mapbox ©OpenStreetMap

5-bar water resistance*

5-bar water resistance is realised, even with a microphone installed.

  • * Based on in-house test by Casio.

Original Watch face

Choose among various face designs according to your mood or intended activity.



A 3D-graphic map of the terrain is displayed as the background for the analogue dial. To add to the fun, places you’ve visited are marked in colour. Travelling the world on foot has never been such a stylish delight.

2 Layers

2 LayersNEW

The time can be displayed simultaneously with altitude, pressure and direction sensor readings.