With summer just around the corner, many of us switch our more formal dress watches for something more suitable for warmer temperatures, travelling and outdoor activities. The ideal summer wrist companion combines water-resistance with robustness and, why not, a splash of colour. The Certina DS Action Diver fits the bill to a tee, and the 38mm edition returns in time for the warm weather in lightweight titanium cases with fun colourful accents and the rock-solid credentials associated with the DS family. Any Certina watch with DS in its name is the descendant of the brand’s innovative Double Security system, introduced in 1959. By incorporating a series of O-seal rings on the stem and crown and reinforcing the caseback, Certina’s DS system protected the movement from external aggressions. Adapted and updated over the years to reflect the latest technical standards, any watch bearing the DS acronym is a guarantee of resilience.…