Brand: Sicura (Breitling and Sicura watches were run by the same owner / company in the 1970's). Model: 400 Super Waterproof Strap: Vintage stainless steel strap (size: 17,5 cm) Type: vintage Diver / Dive watch with date function. Period: 1960's / 1970's Origin: 100 %Swiss Movement: High Quality, Manual wind, 23 jewels, Swiss movement. Measures: +-40mm excluding crown / +-42mm with crown. Approx 46mm Lug to Lug. Condition: In beautiful vintage condition. Please look at the pictures which are an integral part of the description. Bezel: is bi-directional (rotates both ways), bezel is smooth (no incremental steps) Dial: Beautiful patina on lume, lume still very strong Watch is running and keeping time. Service History: unknown Watch will be shipped with insurance and track&trace.