At a glance

The WSD-F20 Smart watch is the latest addition to the PRO TREK brand of outdoor watches by Casio that are designed for total appeal to outdoor enthusiasts. Equipped with built in low-power GPS and color map functionality, it supports a wide range of outdoor and water activities and can be used in areas without cellular service. Richly-designed and easy-to-read map data can be downloaded in advance and used with GPS data to track the user’s location and add markers, even when offline. The WSD-F20X variation includes a new interchangeable strap. Choose from the standard resin, ideal for comfortable everyday use or a practical textile band which wraps firmly around the wrist, even when worn over heavy clothing so you can check your watch for the information you need without having to roll up your sleeve.



12/24 Hour Format

Times can be displayed in either a 12-Hour or 24 Hour Format.

Activity App

The Activity app is a CASIO Android Wear app. It measures the time you spend engaged in different activities.

(trekking, fishing, cycling, paddle and snow)

Adjustable Screen Brightness

5 levels


Altitude Measurement to 10,000m: A built-in pressure sensor measures barometric pressure, which is converted to relative altitude up to a maximum 10,000m.

Measuring range: -700 to 10,000m (-2,300 to 32,800ft)

Measuring unit: 1 metre (or 5ft)

Measurement accuracy: within +/-75m (+/-250ft)

Measurement interval: 1 second (shortest)

Altitude graph (past 24 hours)

Manual altitude correction (auto correction using location information thorough CASIO MOMENT SETTER+, Android only)

Auto Calendar

Allowances are made automatically for leap years and months of different lengths.

Automatic Time Adjustment

The watch will automatically synchronise it's time when connected to a compatible smartphone.

The time can also be adjusted manually.

Band Material





A built-in pressure sensor measures barometric pressure, which is shown on the display.

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

Display unit: 1 hPa (0.1 inHg)

Measurement accuracy: within +/- 3 hPa (+/- 0.1 inHg)

Measurement interval: 1 minute.

Battery Life

Normal use without GPS- more than 1 day.

Timekeeping mode only- more than 1 month.

With GPS at 1 second intervals- up to 9 hours (accuracy priority) up to 25 hours (battery priority)

With GPS at 6 minute intervals- up to 2 days with location tracking saving on.

All values stated are approximate.

Bluetooth® Connectivity

The watch can connect to compatible smartphones to offer a range of features

Bluetooth® v4.1

Low Energy Support

Built in GPS

(American GPS, Russian GLONASS, Japanese "MICHIBIKI" QZSS)

Steadily receives positioning data and displays your current position on a full colour map

Built in Sensors

Magnetic (direction), Pressure (atmospheric/ altitude), Accelerometer and Gyrometer

Digital Compass

A built-in direction sensor detects magnetic north displaying both this and your current direction on the watch face.

Measuring Range: 0 - 359 degrees

Measuring Unit: 1 degree

Hand indication of North.

Magnetic declination calibration

Gradient calibration

Bearing memory.


(H x W x D)

61.7 x 57.7 x 15.3mm

Dual Layer Display

1.32 inch Colour TFT LCD (320 x 300 pixels) + Monotone LCD

Fishing Timer

Indicates the suitability of a specifice date/ time for fishing.

Calculated according to current location, moon hour and age.

Location Memory App

Map screen, route screen, selectable map skin, map downloading (offline maps), voice memo, landmark, revisit marks, history screen.


(water resistant)

Moment Setter App

You can use the CASIO MOMENT SETTER+ app to perform watch functions from your smartphone.

Climbing, trekking, fishing, cycling, paddle and snow notifications)

My Graph Feature

My Graph shows a graphic representation of your activities on the current day. It shows the type of activity you performed and when you performed it.

Daily activity pattern: Stopped, walking, running, vehicle, calories burned, steps, altitude (highest achieved that day) and workout time.

OS: Android Wear 2.0

Android 4.3 or later. iOS 9.0+* or later (*limited functionality, please check microsite for full compatibility list)

Sunrise/Sunset Display

Sunrise and sunset times + direction are displayed.

Based on current location, direction accuracy depends on compass.

Tide Graph

Tidal movements are displayed for your chosen location.

Past 24 hours + next 24 hours.

Tool App

Compass, Altimeter, Barometer, Sunrise/ Sunset, Tide Graph, Fishing Time and My Graph

Total weight


Watch Faces

3 favorites, more can be added.

Water Resistant

50 Metre / 5 Bar

5 Bar Water Resistant means that the watch is also suitable for swimming but NOT snorkelling

Wi-Fi Connectivity

IEEE802.11 b/g/n

World Time

Displays the current time in major cities and specific areas around the world.

Related Links

Support Information