Casio WSD-F21HR User Manual page 127

*1 CASIO test conditions
*2 In order to be able to use these functions your Android phone must have
the CASIO MOMENT SETTER+ app installed, and there must be a
connection between the phone and watch. These functions are not
supported in the case of iOS.
*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 Displaying the step count reduces the battery operating time.
*6 Approximately 19.05 mm (0.8") if the protrusion of the sensor area is
included.
*7 Limited functionality when connected to iOS device.
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