Black Casio Vintage Watch CA-53WF-1BEF with Calculator Casio Vintage digital watch features an angled display with a calculator underneath. The black case and the flexible black watch strap are made of polyurethane. The vintage-inspired watch has a wide range of features: Splash-proof ISO 22810 Case dimensions: 34.4 x 43.2 mm Material: polyurethane Colour: black Acrylic glass Digital calculator Chronograph / Stopwatch function Alarm Automatic calendar Second time zone 12 / 24 h format Battery life up to 5 years Module: 3208 Casio is a Japanese manufacturer of electronic equipment, known in particular for its high-quality and durable sports watches. Casio watches have a wide range of features and are suitable for both extreme sports and active everyday life. Casio watches are also popular in army thanks to their durability and excellent value for money. See all Casio products here