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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →The Casio Pro Trek Smart WSD-F20 has built-in GPS that can acquire your location without a phone, and its dual-layer display pairs a color screen with a monochrome LCD designed to be easier to read in sunlight. You can view offline maps away from your phone only after downloading map data in advance. For buyers today, the major caveat is that Casio ended support for selected companion apps, including CASIO MOMENT SETTER+, on August 4, 2025.
Casio WSD-F20 specifications
| Specification | Casio-listed detail |
|---|---|
| Display | 1.32-inch dual-layer display: color TFT LCD at 320 × 300 pixels plus monochrome LCD |
| Controls and hardware | Capacitive touchscreen, microphone, vibration, 512 MB RAM, and 4 GB internal storage |
| Connections | Bluetooth 4.1 Low Energy and Wi-Fi 802.11b/g/n |
| Positioning and sensors | GPS, GLONASS, and QZSS; pressure sensor, accelerometer, gyrometer, and magnetic sensor |
| Dimensions and weight | About 61.7 × 57.7 × 15.3 mm; about 92 g including the band for WSD-F20 |
| Water and environmental claims | Five-atmosphere water resistance and cited MIL-STD-810G environmental testing |
| Battery figures | More than one day in normal use; approximately one month in Timepiece Mode, under Casio test conditions |
| Charging accessory | Special charger cable and AC adapter listed among included accessories |
These are manufacturer specifications, not independent test measurements. Casio also cautions that passing tests does not guarantee operation or resistance to damage in every environment.
GPS and offline maps: what works without a phone?
The WSD-F20 can acquire location using its own positioning hardware without being connected to a phone. To display maps when away from a smartphone, however, map data must be downloaded onto the watch beforehand. Casio’s Location Memory features include map and route screens, offline map downloading, landmarks, revisit marks, and history; availability of some functions depends on the phone platform and app connection.
The watch’s listed Activity app modes include trekking, fishing, cycling, paddle, and snow. Treat these as outdoor tools rather than evidence of advanced training analysis: the research available for this review does not establish independent performance or accuracy results.
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- 【Compatible Models】Replacement charger compatible with Casio WSD-F10 /WSD-F20 /WSD-F30 /Pro Trek smartwatch.Charger made by Chofit,not by Casio.
- 【Safe Fast Charging & Portable】Durable cord bears the times of bending and with the strong magnetic design,3.3ft/1m proper cable length, easy to take out and good for desk charging.
- 【Durable & Premium Quality】Made from durable PVC material and soft ABS plastic,Durable High-quality Material and Copper Wire ensures Stable Current Transmission, which assures the quality of the charge.
- 【Great Performance & Protection】Built-in voltage regulator prevents your watch from being damaged by over current overcurrent when connected to USB power source(must use adapters under 1a or use computer to charge);
- 【Item Include】Magnetic charger cord for Casio WSD-F10 /WSD-F20 /WSD-F30 /Pro Trek, 1 pack package , replace the easy lost cable and convenient for car.office or bedroom charging,keep your smart watch in power every minutes.
Display and outdoor construction
The 1.32-inch display combines a 320 × 300 color TFT LCD with a monochrome LCD. Casio describes the monochrome layer as easier to read in sunlight. The touchscreen is capacitive, and the watch also includes a microphone and vibration.
Casio lists five-atmosphere water resistance and MIL-STD-810G environmental testing. Its manual explicitly warns that test confirmation does not guarantee operation in every use environment or that the watch will withstand damage or malfunction. Do not treat the testing claim as a promise that the watch is indestructible or suitable for every water activity.
Size is a practical consideration: Casio lists the WSD-F20 at about 61.7 × 57.7 × 15.3 mm and about 92 g including its band. Glass varies by model: the WSD-F20, F20X, and F20A use mineral glass with a dirt-resistant coating; the WSD-F20S and F20SC use sapphire glass.
Battery life and charging
Casio’s 2018 specification reports more than one day of normal use and approximately one month in Timepiece Mode, both under Casio test conditions. These figures are not independent real-world test results, and the dossier does not establish a GPS-and-mapping runtime. Expect usage and the condition of a used watch’s battery to matter; do not rely on an unverified runtime estimate for a trip.
Casio lists a special charger cable and AC adapter among the included accessories. If buying used, confirm that the original charger is included or verify the exact compatibility of any replacement before purchasing.
Rank #2
- Compatibility: Replacement Charger Compatible with Casio Pro Trek Outdoor Smart Watch Model:WSD-F21HR,WSD-F30,WSD-F20 and WSD-F10.
- Replacement: Black color, Charger replacement. Cord length:3.3ft/100cm long enough,free enough for Redmi Watch 2 Lite watch charging.
- Protection Design: This charger with voltage regulator inside(PTC). To Protect your smart watch from being damaged by overcurrent or short circuit. To replace for your original charger is lost or damaged. Or you forget to take one,this one can be spare.
- Charger and Device Care: The charger can be connected to USB power source on PC, laptop, notebook.Please keep this charging method that can provide high efficiency and high stability charging experience for you.
- Package Included: usb charger cable compatible with Casio Pro Trek WSD-F30 smartwatch. No watch or band included.
Phone compatibility and app-support status
Current ownership is affected by Casio’s notice dated December 16, 2024: support for selected Smart Outdoor Watch apps, including CASIO MOMENT SETTER+ for Android/Wear OS 2 and apps for the WSD-F20 series, ended on August 4, 2025. Casio said installed apps may continue to work, but changes to a phone or its operating system may cause an app to stop functioning without warning. Do not assume new setup, pairing, or companion-app functions will work seamlessly with a current phone.
Casio’s support page lists Android 6.0 or later, excluding Go Edition, and iOS 12 or later for supported models, with limited functionality and a Wi-Fi environment required for iOS. It also says existing WSD-F20 configurations using Android 4.3 or later or iOS 9 or later may continue, while recommending the newer requirements. Compatibility can change, and these statements do not override the app-support discontinuance. Check Casio’s current support information for the specific phone and functions you need before buying.
Is the Casio Pro Trek Smart WSD-F20 still worth buying?
It may suit someone who specifically wants a rugged-oriented smartwatch with built-in GPS, a sunlight-oriented monochrome display, and offline map capability after advance map downloads. Its discontinued companion-app support and uncertain compatibility with changed phones make it a cautious used purchase, not a safe choice for anyone who needs dependable current app support.
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Before buying, inspect the actual watch and verify its battery condition, included charger, phone-pairing needs, and whether the map and app functions you require work in your intended setup. Do not assume used availability, condition, or price is stable.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.FAQ
Does the WSD-F20 have GPS without a phone?
Yes. Casio specifies built-in GPS, and its manual says the watch can acquire location without connecting to a phone. Maps still need to be downloaded beforehand if you want to view them offline.
Rank #3
- Please be attention that screen protector is flexible plastic film, Not Tempered Glass.
- TPU material with smooth surface, keep you a high touch sensitive and fast fingerprint recognition.
- 4H Hardness can effectively resist daily scratches.
- Self-healing properties enable the film to recover from minor scratches and keep your screen brand new.
- Dust-free,bubble free,one-push super easily installation.
Can you use offline maps on the Casio WSD-F20?
Yes, after downloading map data to the watch in advance. Some Location Memory functions have phone, app, or platform requirements, so check the manual and current support information for the feature you need.
How long does the WSD-F20 battery last?
Casio reports more than one day of normal use and approximately one month in Timepiece Mode under its test conditions. These are manufacturer figures; the research for this review does not establish independent GPS or map-use runtime.
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It may, but compatibility is not assured. Casio ended support for selected apps, including CASIO MOMENT SETTER+, on August 4, 2025, and warns that phone or operating-system changes can make installed apps stop working without warning. Check the specific phone and functions before purchase.
What charger does a Casio WSD-F20 use?
Casio lists a special charger cable and AC adapter among the included accessories. For a used watch, confirm the charger is included or verify replacement compatibility for the exact model.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
