Read the warning. Tap Reset Device or Confirm .
Press and hold the Top Right button for about 10–15 seconds until the screen goes black and the watch vibrates. Release immediately. This forces a power-off. How to Hard Reset CASIO Pro Trek WSD-F20
Release both buttons. Use the Bottom Right button to scroll down through options. Stop on “Recovery Mode” . Read the warning
Scroll down and select System .
Whether you’re troubleshooting persistent glitches, preparing your watch for a new owner, or simply want a fresh start, a hard reset (factory reset) on the CASIO Pro Trek WSD-F20 restores the device to its out-of-the-box state. Unlike a simple reboot, this process erases all user data, accounts, and downloaded apps. Release immediately
Wait 2–3 minutes. The watch will reboot, show the CASIO logo, and then present the language selection screen — indicating a successful hard reset. Method 2: Hard Reset Using Hardware Buttons (For Unresponsive Watch) If the watch is frozen, stuck on a logo, or the touchscreen isn’t working, use this method.
Scroll and tap Settings (the gear icon).