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Casio

WSD-F21HR-RD

Casio PRO TREK Smart - Heart rate Monitor

Main Specifications

GPS Compatible (including GLONASS and MICHIBIKI (QZSS))
Color Maps Compatible (supports offline use)
OS Wear OS by Google
Display 1.32-inch, dual layer display
Color TFT LCD (320 × 300 pixels) and monochrome LCD
Touchscreen Capacitive touchscreen (anti-fouling coating)
Water Resistance 5 bar (50 meters)*1
Environmental Durability MIL-STD-810G (United States military standard issued by the U.S. Department of Defense),*2
low-temperature resistance (-10 °C)
Sensors Optical sensor (heart rate), compass (magnetic) sensor, pressure (air pressure, altitude) sensor, accelerometer, gyrometer
Heart Rate Measurement Yes
Microphone Yes
Vibrator Yes
Battery Lithium-ion battery
Wireless Connectivity Bluetooth® V4.2 (Low Energy)
Wi-Fi (IEEE 802.11 b/g/n)
Buttons MAP button, Power button, APP button
Charging Method Magnetic charging terminal
Recharging Time Approx. 2.5 hours at room temperature
Battery Life
(When GPS Not in Use)
Normal use (Color display auto OFF*3):Up to 1.5 days
Multi-Timepiece mode (timekeeping and sensors only):Up to 1 month
Battery Life
(Using GPS (activity))
Running/trail running (using heart rate measurement):Up to 20 hours*3 *5
Size of Case Approx. 61.7 × 57.7 × 16.8 mm (H × W × D)
Weight Approx. 81 g (including wristband)

Heart Rate Measurement Functionality

Use this data for your training,  whether it be managing the pace 
of your activity or increasing  your endurance.

Detect your motion to take measurements automatically.
Dedicated heart rate  watch face

The watch face used in these models links up with the heart rate measurement functionality.
When the internal accelerometer detects motion (walking, running, or cycling), measurement begins automatically.

Use as an index for pace management.
Heart rate measurement  + heart rate zone display

SUPPORTED ACTIVITIESRunningTrail runningTrekkingCyclingPaddlingSnow activities

  • In addition to your current heart rate and the maximum and minimum heart rate for that day, display your exercise intensity in the form of your heart rate zone over five different levels.
    Enjoy activities or training without overexerting yourself.

    • * Note that your resting heart rate and maximum heart rate must be set up before your heart rate zones can be displayed.

Heart rate zone alerts

If you set a particular heart rate zone in advance, you will be notified via a display and a vibration when you have exceeded that zone.
This helps to prevent you from overexerting yourself.

GPS +  Color Map Display

For both new places  and old favorites.  View a map while  you enjoy your activities.

Easily set up routes.
Route input

Import GPS log data (such as for past routes or recommended routes from ViewRanger) into the watch by using Google Drive™, and set these routes for running. Check your route on the map while you run as a form of simple navigation.

Instantly find out where you are now.
Current location display

Display your current position and your recorded movement log on a high-definition color map while you measure your activity. This allows you to check your current position without having to get out your smartphone. Use this feature in situations such as when you want to challenge yourself with new courses or when you want to run while traveling.

○ Current location ○ Center of movement: Color-coded heart rate zone display*

  • * The data for which color-coded display is possible varies depending on the activity.
 
Share your favorite routes.
Creation of original routes

Save the routes on which you travel during your activities as activity data. You can use markers to record checkpoints for locations such as places where water is available, and create your own running routes. You can then share these routes with others.

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