Eterna watch artena if you adore the traditionalism of a classic timepiece the artena collection from eterna watches can promise ultra resilience suspended in layers of complete sophistication dressed in a traditional black colour and made from marine grade steel the casing used for eterna watches can protect the timepiece against denting scratching dulling and eroding this 40mm gentlemans watch is purpose built to provide its owner with a faithful companion that delivers precision 24 7