In 1983, Casio engineer Kikuo Ibe designed the first G-Shock: the DW-5000C. It had a 10-year battery life, water resistance to 10 bar and was able to survive a 10 meter fall onto a hard surface (he tested 200 prototypes by dropping them from rooftops or third story windows).

The shock resistant design has 10 layers protecting the quartz timekeeping module, including a urethane rubber bumper, the stainless steel case, the hardened mineral glass watch crystal, the stainless steel screwed down caseback, and the "floating module" where the quartz mechanism floats free in a urethane foam cradle, with the outer buttons and LCD module attached with flexible cables.

Casio released the G-Shock in April 1983, to fill the demand for durable watches. The popularity of G-Shocks increased throughout the 1990s. By 1998 Casio released over 200 G-Shock models. By then Casio had sold 19 million G-Shocks worldwide.

In 1991, Casio released the Baby-G series for women.

G-Shock Mini are 70% the size of a G-Shock, for people who have smaller wrists. They are available in Japan and can be shipped worldwide.

On September 1, 2017, Casio celebrated its 100 millionth shipment of G-Shocks worldwide.

Casio (136)

Casio G-Shock 5600 Gold Black GM5600G-9


Casio G-Shock B400 G-Steel Black Gold GSTB400GB-1A9


Casio Vintage A1000 Black Gold A1000MGN-9


Casio G-Shock B100 G-Steel Black Gold GSTB100GB-1A9


Casio G-Shock B500 G-Steel Black Gold GSTB500BD-1A9


Casio G-Shock 2100 Full Metal Black GMB2100BD-1A


Casio Baby-G x Sailor Moon Navy BA110XSM-2A


Casio G-Shock x HUF 2100 Green GA2100HUF-5A


Casio G-Shock 2100 Full Metal Rose Gold GMB2100GD-5A


Casio G-Shock 5600 Black White DW5600GU-7


Casio G-Shock MR-G Black MRGB5000BA-1


Casio Vintage Collection Gunmetal Digital Retro Watch A168WEMB-1B


Casio G-Shock Sand and Land GX56SL-4


Casio G-Shock 5000 Full Metal Virtual Armor GMWB5000TV-B1


Casio G-Shock 5600 Red GWB5600SL-4


Casio G-Shock 5600 Sand GWB5600SL-5


Casio G-Shock 2200 Digital Glitch GA2200NN-1A


Casio G-Shock 2100 Iridescent GA2100NN-1A


Casio G-Shock 2100 Black Iridescent GA2100SR-1A


Casio G-Shock 2100 Blue GA2100BWP-2A


Casio G-Shock Black Iridescent GA110SR-1A


Casio G-Shock 5600 Blue DW5600BWP-2


Casio G-Shock MT-G Black Red MTGB3000BD-1A


Casio G-Shock MT-G Black Green MTGB3000BD-1A2