cal. 13 automatic nickel lever movement • bi-colour black and silvered dial baton indexes luminescent dots and hands subsidiary dials for 30-minute register combined with date 12-hour register combined with day in English month combined with leap year and moon-phases outer tachometer scale • polished case rotating bezel sapphire crystal screw-down case back • case dial and movement signed • with an 18k white gold Breitling folding buckle