Casio G-Shock GA-2100 (CasiOak) vs Citizen Eco-Drive Corso Watch

Buy the G-Shock GA-2100 if you want a tough everyday watch you can swim, work and travel in. Buy the Citizen Corso if you want a slim steel dress watch that never needs a battery and looks right with a shirt. The CasiOak wins on durability, water resistance and functions; the Corso wins on build feel, legibility of a clean analog dial and long-term ownership, since Eco-Drive runs off light. Owners rate the Corso higher, but the GA-2100's 4.3 from 149 ratings still reflects a well-liked, proven design.

• Choose the G-Shock GA-2100 if you need 200 m water resistance, shock protection and a stopwatch, timer, alarm and world time in one watch.
• Choose the Citizen Corso if you want a stainless steel watch for work and evenings that never needs a battery change.