Casio to Release PRO TREK Smart Outdoor Watch in Indigo Blue Color Scheme

April 17, 2018


Tokyo, April 17, 2018 — Casio Computer Co., Ltd. announced today a new addition to the PRO TREK Smart series of wrist devices for outdoor enthusiasts. The WSD-F20A features an indigo blue color scheme designed for active living.

With the WSD-F20 as its base model, the WSD-F20A features an indigo blue body color that matches a variety of looks including jeans. The color scheme is designed to appeal to people who are active both at and away from work. The WSD-F20A achieves an affordable price with details such as a lightweight and durable resin buckle and a streamlined design with three large buttons.

Like its base model, the WSD-F20A features low-power GPS and color map functionality that can be used offline. It is great for a wide range of outdoor and water activities and can be used on its own in areas without cellular service. It is also very handy for any activity that users cannot do with a smartphone in their hands.

The WSD-F20A runs Wear OS by Google, which allows the user to add apps to expand its functionality. Casio has signed on nine major app companies to provide popular outdoors and sports apps with a global reach. These apps are showcased in the “Featured Apps” list on the device for users to download.

Featured Apps

Main Application/Features
Augmentra Ltd.
Trekking: Trail map display and trail guides
Golf: Golf course display and distance measurement
Glassy Surf Report
Glassy Surf Report
Gradient Technologies S.L
Surfing: Surf/weather forecasts and session measurement
Ski Tracks
Ski Tracks
Core Coders Ltd.
Skiing/snowboarding: Distance and speed measurement
MySwimPro Swimming Workout Log
MySwimPro Swimming Workout Log
Swimming: Training guide and workout logging
Fishbrain AB
Fishing: Fishing forecast and fishing spot display
Zombies, Run!
Zombies, Run!
Six to Start
Fitness gaming: Activity logging
Schvung Ride AB
Horse riding: Training guide and ride logging
Exercise Timer
Exercise Timer
Fitness: Timer and training management


Water Resistance
5 bar (50 meters)*1
Environmental Durability
MIL-STD-810 (United States military standard issued by the U.S. Department of Defense)*2, low-temperature resistance (-10°C)
1.32-inch dual layer display
Color TFT LCD and monochrome LCD
Color: 320×300 pixels
Capacitive touchscreen (anti-fouling coating)
Compatible (including GLONASS and Michibiki)
Color Maps
Compatible (supports offline use)
Pressure (air pressure, altitude) sensor, accelerometer, gyrometer, compass (magnetic) sensor
Wireless Connectivity
Bluetooth® V4.1 (Low Energy)
Wi-Fi (IEEE 802.11 b/g/n)
TOOL button, Power button, APP button
Lithium-ion battery
Charging Method
Magnetic charging terminal
Recharging Time
Approx. 2 hours at room temperature
Battery Life
(when GPS is not in use)
Normal use (color display): 1 day, roughly
Normal use (color display Auto Off*3): 2 days, roughly
Timepiece Mode (timekeeping only): more than 1 month, roughly
(Varies according to use)
Battery Life
(when GPS is in use)
Per-second measurement (color display):
 6–8 hours (Accuracy Priority) / 18 hours, roughly (Battery Priority)
Per-second measurement (color display Auto Off*3):
 7–9 hours (Accuracy Priority) / 25 hours, roughly (Battery Priority)
Intermittent measurement (color display):
 1 day, roughly (measurement every 6 minutes)
Intermittent measurement (color display Auto Off*3):
 2 days, roughly (measurement every 6 minutes)
(Varies according to use)
Size of Case
Approx. 61.7 mm × 57.7 mm × 15.3 mm (H×W×D)
Approx. 90g (including wristband)
Wear OS by Google
Operating Environment
Use of the device requires a smartphone with the following specifications.
 Smartphone with Android™ 4.3 or later.
 One of the following models with iOS 9 or later:
iPhone 5 or later
  • *1 Based on in-house test by Casio.
  • *2 Ten 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.
    • Solar radiation: Tested to meet MIL-STD-810G Method 505.6 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.
  • *3 Automatically switches to time display in monochrome LCD when the device is not in operation.

  • Bluetooth is a registered trademark of Bluetooth SIG, Inc.
  • Wear OS by Google and other marks are trademarks of Google LLC.
  • iPhone is a trademark of Apple Inc., registered in the U.S. and other countries.
  • IOS is a trademark or registered trademark of Cisco Systems, Inc. registered in the U.S.
  • Other service and product names and so forth are trademarks or registered trademarks of the respective companies.

Related Links