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 #
Maxell 399/395 SR927 1 Battery BOGO - Watch Batteries - Watch Batteries - AA AAA batteries - Rechargeable Batteries - Discount Batteries - Shipped Free in US
Casio G-Shock GG-1000 Battery / SR927W
Casio Protrek ATC-1000 Watch, Mobile Phones & Gadgets, Wearables & Smart Watches on Carousell
How to Replace the Battery of a Casio Pro-Trek or G-Shock Watch (feat. PRG-40) - Perth WAtch #228 - YouTube