G-Shock Watch Heavy Duty GA-900E-1A3ER. The heavy duty models that are great for wear in tough environments and as street fashion items as well. The black resin band of the GA 900E model comes with both a black resin band and a cloth band that is interwoven with highly visible reflective yellow material. The industrial design of this models is created by a 10 sided bezel that resembles the shape of a nut. The bezel is secured by four screws for a tough and rugged look. Combination timekeeping is provided by analog hands along with a digital display for the ultimate in operational ease. The design of the hands and the graphic figures that appear in the digital readouts create a powerful face design that enhances readability. The band connection and all buttons have checkered surfaces that prevent slipping and contribute to operational efficiency.