Casio has unveiled three G-Shock GM-6900 watches to mark 25 years since the original 6900 series was launched in 1975.
The seventies model was nicknamed the Triple Graph thanks to the three indicators at the top of the dial. It was the first G-Shock to have an lectro-luminescent back light, making the display legible day and night.
This year’s additions come in red, silver and gold with stainless steel bezels for the first time. They are worn on rubber straps.
They go on sale at the end of February or early March for £179 (silver), £199 (red) £219 (gold).