Pro Trek by Casio Smart Outdoor Watch WSDF20BK


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Pro Trek by Casio Smart Outdoor Watch WSDF20BK


  • OS: Android Wear 2.0 (used with Smartphone running Android 4.3+ or later. For models for which operation has been confirmed, refer to the Google check page. )

(iPhone*5, equipped with iOS 9.0+ or later: iPhone 5 or later, with limited functionality.)

  • 50 Meter Water Resistant*1
  • Military Standard MIL-STD-810G (United Stated Military Standard issued by the U.S. Department of Defense)
  • 1.32-inch dual layer display, Color TFT LCD (320 x 300 pixles) + Monochrome LCD
  • Capacitive touchscreen
  • GPS (American GPS, Russian GLONASS and Japanese “MICHIBIKI” QZSS)
  • Steadily receives positioning data and displays your current position on a full-color map
  • Built-in Sensors: magnetic (direction), pressure (atmospheric, altitude), accelerometer, and gyrometer
  • Microphone (water resistant)
  • Vibration
  • Bluetooth: Bluetooth® V4.1 (Low Energy support)
  • Wi-Fi: IEEE802.11 b/g/n
  • Memory & storage: 512 MB RAM, 4 GB internal storage
  • Auto Time Correction: By communication with smartphone (Time can be adjusted manually.)
  • Time zones (world time function): Supports multiple world time zones (Types depend on system time zones)
  • Tool App (Compass, Altimeter, Barometer, Sunrise/Sunset, Tide Graph & Fishing Time, My Graph)
  • Digital Compass
  • Measuring range: 0 to 359 degrees
  • Measuring unit: 1 degree
  • 60 seconds continuous measurement
  • Hand indication of North
  • Magnetic declination calibration
  • Bearing Memory
  • Gradient Calibration


  • Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft)
  • Measuring unit: 1m (5ft)
  • Measurement Accuracy: within +/-75m (+/- 250ft)
  • Measurement Interval: 1-second (shortest)
  • Altitude Graph: Past 24 hours
  • Manual altitude correction, Auto altitude correction using location information*2 *3


  • 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 (within +/-0.1 inHg)
  • Atmospheric pressure tendency graph: Past 24 hours
  • Measurement Interval: 1-minute

Tide & Fishing

  • Tide Graph: Past 12 hours + next 12 hours
  • Fishing Time: calculated according to curent location, moon hour angle and age)

Sunrise/Sunset Data

  • Sunrise and sunset times (current location sunrise/sunset)
  • Sunrise and 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
  • Activity app (Trekking, Fishing, Cycling, Paddle, Snow)
  • Moment Setter app (Climbing, Trekking, Fishing and Cycling, Paddle, Snow notifications)
  • Location memory app (Map screen, route screen, selectable map skin, map downloading (off-line maps), voice memo, landmark, revisit marks, history screen)
  • Screen Brightness: 5 levels
  • Watch faces: 3 favorites, more can be added
  • Full auto-calendar: Auto switching by linking with smartphone
  • 12/24-hour timekeeping
  • Battery: Lithium-ion
  • Watch Battery level indicator: interger value, 0 to 100%
  • Approx. battery life:

· In normal use without GPS connectivity - More than 1 day, roughly (varies according to use) 
· Timepiece Mode (timekeeping only) - More than 1 month, roughly (varies according to use) 
 · With GPS connectivity at 1-second intervals, up to 9 hours with accuracy priority (varies according to app use), up to 25 hours with battery priority 
·With GPS connectivity at 6-minute intervals, up to 2 days with location tracking log saving on

  • Recharging Time: Approx. 2 hours at room temperature
  • Module: WSD-F20

Size of case/total weight
WSD-F20 61.7 x 57.7 x 15.3mm / 92g

*1 CASIO test conditions
*2 iOS not supported. (It is necessary to install CASIO MOMENT SETTER+ Ã??Ã???on an Android smartphone.)
*3 GPS altitude information is used, so the indicated altitude may not exactly match the actual above sea level elevation or altitude.
*4 Default: OFF
*5 Limited Functiionality when connected to an iOS device