With calendar function Case / Bezel Material: Resin / Stainless Steel Dial Digital Drive Solar System Drive Solar Product New standard model appears. Large buttons with good operability are used in the large case that seems to be G-SHOCK. The light is also equipped with a white high-brightness LED that can switch the light emission time. It is a fully automatic LED light that senses light and dark and emits light just by tilting your arm. The GW-8900 is a classic color that uses the brand red color as the color and the GW-8900A which uses a reversing liquid crystal for a cool finish. Standard G-SHOCK. Brand introduction G-SHOCK has built a new concept of toughness on watches. It all started with a developer's conviction to create a watch that would not break even if dropped and a reckless challenge that overturned common sense at the time. Over 200 prototypes have been repeated and about two years have been spent and the shock-resistant structure has been completed. It is the birth of technology that plays a central role in toughness. Since then G-SHOCK has continued to evolve. Structure material function. In pursuit of further toughness from all sides. Weight: 200 Model Number: GW-8900-1JF