The most telling feature of every Cartier Ballon Bleu watche would be the sapphire cabochon crown covered with a metal arch on its gracefully rounded case which is reminiscent of a blue balloon, hence the name. Available for both ladies and gents, Cartier Ballon Bleu timepieces come in three sizes ranging from 28mm to 44mm and provides a variety of options in terms of case materials, dials, straps and bracelets while sporting a distinct Cartier look with a guilloche dial and blue steeled hands. The dials are made of silver opaline, white or Mother of Pearl and feature hours in Roman Numerals and minutes functions with some models equipped with added complications like two time zone, chronograph, GMT, and flying tourbillon. Precision with a quartz or automatic movement together with its elegantly subtle aesthetics make the Cartier Ballon Bleu a classic timepiece that will always be remembered in the history of horology.