![How to Replace the Battery of a Casio Pro-Trek or G-Shock Watch (feat. PRG-40) - Perth WAtch #228 - YouTube How to Replace the Battery of a Casio Pro-Trek or G-Shock Watch (feat. PRG-40) - Perth WAtch #228 - YouTube](https://i.ytimg.com/vi/ovDWdsAZX2I/sddefault.jpg)
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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Maxell 399/395 SR927 1 Battery BOGO - Watch Batteries - Watch Batteries - AA AAA batteries - Rechargeable Batteries - Discount Batteries - Shipped Free in US
![Shaun Cuff on Twitter: "Just fitted new batteries to my Casio ATC-1000. This particular model is 25 years old and was Casio's first triple sensor watch (digital compass, altimeter and thermometer). #WearableTech # Shaun Cuff on Twitter: "Just fitted new batteries to my Casio ATC-1000. This particular model is 25 years old and was Casio's first triple sensor watch (digital compass, altimeter and thermometer). #WearableTech #](https://pbs.twimg.com/media/EKsV7ZHXUAEVM_x.jpg)