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The new WSD-F21HR offers a new heart rate monitor together with the wearable map technology, enabling wearers to continually check their physical condition, or navigate unfamiliar routes. Running and Trail Running menus have been added to the Activity app, which displays measurement data in real time. The user can optimize the data displayed by choosing three types of information such as heart rate, pace, and distance to display on the watch. Furthermore, because up to four screens can be set, the user can easily switch between them and check the desired information during the activity.
In addition, it comes with a new Heart Rate watch face. Using an accelerometer, the WSD-F21HR automatically switches to the heart rate monitor screen when motion is detected. The heart rate information is expressed as five heart rate zones, allowing the user to see this data at a glance.
As with other PRO TREK Smart models, the new WSD-F21HR can use Google App services, the trekking app ViewRanger, the cycling app BIKEMAP, the running app STRAVA, and other outdoor sports apps compatible with Wear OS by Google. The WSD-F21HR is a wrist device for all kinds of activities.


  • Water Resistance 50 meters
  • Environmental Durability MIL-STD-810 (United States Military Standards issued by the U.S. Department of Defense)
  • 1.32-inch dual layer display
    Color TFT LCD and monochrome LCD
    Color: 320×300 pixels
  • Capacitive touchscreen (anti-fouling coating)
  • GPS Compatible (including GLONASS and MICHIBIKI (QZSS))



Out of Stock
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