However, inside them are quartz mechanisms that are absolutely up-to-date. Green light for variety. The vintage watches in the CASIO Collection are reminiscent of the design of the first digital watches of the 1970s. However, they also feature quartz mechanisms that are completely in tune with the times. Give way to variety. Both the ladies' and men's watches are distinguished by their modern technology and attractive design, and convince with their countless intelligent functions and their variety of models, colours, materials and styles. The watches in the CASIO Collection series are characterised by their robust construction and the use of high-quality materials. The CASIO Collection series watches are characterised by their robust construction and the use of high-quality materials. Both the ladies' and men's watches are characterised by their modern technology and attractive design, and impress with their countless intelligent functions and their variety of models, colours, materials and styles. The vintage watches in the CASIO Collection are reminiscent of the design of the first digital watches from the 1970s. However, they contain quartz mechanisms that are absolutely up-to-date. Green light for variety.