I have a Casio Telememo 30 from 2004. Never opened or serviced and the battery was never changed. I got it from my grandmother for my graduation and I never took it
Casio AW80D-1AV, Telememo 30 Watch, 10 Year Battery, 3 Alarms, World Time | eBay
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Unboxing Casio World Time Telememo 30 Watch AEQ110W-1AV - YouTube