How to Replace the Battery of a Casio Pro-Trek or G-Shock Watch (feat. PRG-40) - Perth WAtch #228 - YouTube
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PRG340-1 | Black Watch - PRO TREK | CASIO
For smarthwatch Casio Pro Trek WSD f20 LIS1584CSPC 7228BB0674 battery 3.8v 330mAh - AliExpress
Battery replacement after 3 years on WSD-F20. : r/casiowsd