Then press the bottom left button twice until 12H is flashing on the display. Next, press the bottom right button to change it to 24H. Lastly, press the top left button to save your desired setting. To check your newly set 24 hour time press the top right button to change the display from showing the day and date to the current time.
3rd July 2017. in. G-Shock, Manuals. The Ultimate Guide to All G-SHOCKs — composed by Experts. Casio Watch Line: G-Shock. Module number: 5398. Manual in PDF: Watch 5398 Online → (without downloading, good for mobile); English Instruction Manual in PDF: Download. 4. Press Ⓐto exit the setting screen. CASIO STEP TRACKER Bluetooth MUTE WATER RESIST LAP . CASIO STEP TRACKER Bluetooth MUTE WATER RESIST LAP Ahp5l.