The base model is the anti-magnetic GA-100 analog-digital combination watch

Screw case back

The auto hand home position correction

CRYSTAL: Domed Sapphire Crystal

Casio • AE1000W-8AV • Classic Shape:Round The base model is theSPECIFICATIONS Case size (L W H) 48. 2 45 13. 8 mm Weight 40 g Case and bezel material Resin Band Resin Band Water resistance 100 meter water resistance Power supply and battery life Approx. battery life: 10 years on CR2025 Country Of Origin Thailand Glass Resin Glass Spherical Glass Compatible band size 145 to 215 mm World time Multi Time (4 different cities) World time 31 time zones (48 cities + coordinated universal time), daylight saving on off,