My Casio F-Series Watches Sofar.
The Casio F-series quartz digital watches were introduced by Casio in 1978 and continue to be sold worldwide.
> CASIO | F-5
> MODULE: 58
> WATER RESIST: NONE
> CASING: Resin
> FUNCTIONS: light
> RELEASED | 1980 or 82
> CASIO | F-7
> MODULE: 58
> WATER RESIST: NONE
> CASING: Resin
> FUNCTIONS: light
> RELEASED | 1980
> CASIO | F-8
> MODULE: 58
> WATER RESIST: NONE
> CASING: Resin
> FUNCTIONS: light
> RELEASED | 1978 or 79
> CASIO | F-10
> MODULE: 155
> WATER RESIST: NONE
> CASING: Resin
> RELEASED | 1980-82
> CASIO | F-11
> MODULE: 155
> WATER RESIST: NONE
> CASING: Resin
> RELEASED | 1980-84
BATTERY: CR BUTTON CELL 2016
> CASIO | F-12
> MODULE: 500
> WATER RESIST: NONE
> CASING: Resin
> RELEASED | 1984
BATTERY: CR BUTTON CELL 2016
> CASIO | F-14
> MODULE: 350
> WATER RESIST: NONE
> CASING: Resin
> RELEASED | 1982-85
> CASIO | F-18
> MODULE: 695
> WATER RESIST: NONE
> CASING: Resin
> RELEASED | 1986-89
> CASIO | F-20
> MODULE: 400
> WATER RESIST: YES
> CASING: Resin
> RELEASED | 1984
> CASIO | F-21
> MODULE: 400
> WATER RESIST: YES
> CASING: Resin
> RELEASED | 1984
> CASIO | F-23
> MODULE: 568
> WATER RESIST: YES
> CASING: Resin
> RELEASED | 1984
> CASIO | F-24
> MODULE: 568
> WATER RESIST: YES
> CASING: Resin
> RELEASED | 1986