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Out of stock - Casio WSD-F20 Pro Trek Smartwatch

Out of stock

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Product code: 15930938 / 337803

A tough smartwatch with low power GPS, full colour maps, and well-refined sensor technology.

Proprietary dual-layer LCD, with power conservation mode
A dual-layer monochrome and colour LCD. The monochrome LCD shows the time while the colour LCD shows maps, measurement data, and apps.
It switches between displaying both LCDs, or just the monochrome LCD, to ensure optimum visibility in all situations, conserving power when spending long hours in the outdoors.

Location Memory
Directly accessed by pressing a side button, your current location is instantly saved. In addition to recording the path you've travelled, you can also make a mark or use speech recognition* to add notes to otherwise unmarked map spots.
* Speech recognition cannot be used without cellular service on a smartphone

Essential information for outdoor activities and sports
The TOOL app provides real-time information about changes in the natural environment and the user’s activity levels, such as compass direction, altitude and air pressure, sunrise and sunset times, tide graphs, and activity graphs.

Real-time measurement data
The Activity app is great for outdoor pursuits such as hiking, cycling, fishing, and snow and paddle sports.
It can use GPS data and colour maps in the Hiking function to record the path travelled on a map, while also showing the course and maximum speed of each run in the Snow function.

Toughness meets outdoor challenges
It's water resistant to 50 metres and equipped with a water-resistant audio mic, while the touchscreen features an anti-fouling coating to resist stains from fingerprints.

Interchangeable original watch face designs
Pre-installed with a number of watch faces to choose from, with even more available to downloaded from the Google Play store.

  • Water resistant to 50 metres
  • Built to military standard specifications
  • Button guards, protective bezel, and large and small side buttons
  • Popular outdoor and sports apps can be downloaded and installed, showcased in the “Featured Apps” list on the device
  • Quick access to information during activities, such as trekking, cycling, fishing, winter sports, and watersports
Total weight: 92gDimensions: (H x W x D), 61.7 x 57.7 x 15.3mm

12/24 Hour Format: Times can be displayed in either a 12-Hour or 24 Hour Format.
Activity App: (trekking, fishing, cycling, paddle and snow), The Activity app is a CASIO Android Wear app. It measures the time you spend engaged in different activities.
Adjustable Screen Brightness: 5 levels
Altimeter: Manual altitude correction (auto correction using location information thorough CASIO MOMENT SETTER+, Android only), Altitude graph (past 24 hours), Measurement interval: 1 second (shortest), Measurement accuracy: within +/-75m (+/-250ft), Measuring unit: 1 metre (or 5ft), 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)
Auto Calendar: Allowances are made automatically for leap years and months of different lengths.
Automatic Time Adjustment: The time can also be adjusted manually., The watch will automatically synchronise it's time when connected to a compatible smartphone.
BarometerMeasurement interval: 1 minute., Measurement accuracy: within +/- 3 hPa (+/- 0.1 inHg), Display unit: 1 hPa (0.1 inHg), Display range: 260 to 1,100 hPa (7.6 to 32.5 inHg), A built-in pressure sensor measures barometric pressure, which is shown on the display.
Battery Life: All values stated are approximate., With GPS at 6 minute intervals- up to 2 days with location tracking saving on., With GPS at 1 second intervals- up to 9 hours (accuracy priority) up to 25 hours (battery priority), Timekeeping mode only- more than 1 month., Normal use without GPS- more than 1 day.
Bluetooth® Connectivity: Low Energy Support, Bluetooth® v4.1, The watch can connect to compatible smartphones to offer a range of features
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: Bearing memory., Gradient calibration, Magnetic declination calibration, Hand indication of North., Measuring Unit: 1 degree, Measuring Range: 0 - 359 degrees, A built-in direction sensor detects magnetic north displaying both this and your current direction on the watch face.
Dual Layer Display: 1.32 inch Colour TFT LCD (320 x 300 pixels) + Monotone LCD
Fishing Timer: Indicates the suitability of a specific 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.
Microphone: (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: Daily activity pattern: Stopped, walking, running, vehicle, calories burned, steps, altitude (highest achieved that day) and workout time., 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.
OS: Android Wear 2.0Android 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: Past 24 hours + next 24 hours., Tidal movements are displayed for your chosen location.
Tool App: Compass, Altimeter, Barometer, Sunrise/ Sunset, Tide Graph, Fishing Time and My Graph
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.


This product qualifies for the following delivery methods

Standard Delivery (Up to 10 days) (FREE)


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Premium Express Delivery (2 working days) (£6.95)


Premium Express delivery takes 2 working days, order by 4pm. Once despatched you will receive updates from the courier.

Reserve and Collect (within an hour) (FREE)


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AM Delivery (£7.95)


Order by 8pm and get your item delivered to you by 12pm the next working day (Not available for NI, Channel Islands or Highlands)

Bike Delivery (£4.95)


Bike delivery is £4.95. This applies to all bikes, and these orders are upgraded to a DHL courier service.

British Forces Post Office (BFPO) (FREE)


Delivery before 10:30am (£8.95)


Saturday Delivery (order by 6pm Friday) (£5.95)


Next Day Delivery (order by 6pm Mon - Fri) (£2.95)


Delivered by UK Mail. Remote areas may take longer, please click here for more info.

Click and Collect Next Day (order by 6pm Mon - Fri) (£2.95)



Returning orders to us is easy. Whatever your reason, we offer a refund or exchange within 28 days of delivery or collection.

Ratings & Reviews

Overall Rating

4.50 out of 5
2 reviews
Write a review
4.50 out of 5

A great watch, impressive!

Over 6 months I've tested this watch in various locations. I'm very impressed with it, especially when using viewranger mapping. I download 1:25k maps and follow planned routes, it works a treat.

4.50 out of 5

Decent GPS watch

impressive capability, rather bulky but for a reason (and it still looks good). Battery life is good if used sparingly. I would like more support with accessories and watch faces but I would recommend

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