IWCさんのインスタグラム写真 - (IWCInstagram)「The #IWCPortofino Chronograph (Ref. IW391025) takes its design cues from the 1960s, with elegantly sporty push-buttons and chronograph displays. The chronograph in 18-carat 5N gold with a silver-plated dial has a convex sapphire glass and and 5N gold numerals. It is powered by the tried and tested self-winding 75320 calibre with its 44-hour power reserve.」6月9日 22時00分