Two new Casio G-Shock watches have been listed at the brand's online store in the UK: the DW-5600RL-1ER and the DW-6900RL-1ER. These two wearables are part of a wider collection celebrating the original G-Shock launched in 1983. The models, which are said to run for up to five years, have also appeared at third-party retailers in other countries.