Frederique Constant launched the Highlife Perpetual Calendar Manufacture with a mysterious blue-grey dial for the first time. Borrowing from both blue, grey and black, this new dial characterises that fleeting moment between dusk and dawn, when the day eclipses to make way for the celestial vault. The perpetual calendar is the expression of this, indicating both the days and the phases of the moon. It is complemented by the date, month and leap year indications, all on a single dial that favours simple and intuitive reading. This new deep blue-grey dial guarantees perfect legibility thanks to the contrast of the white typography and the mirror-polished and luminescent hour-markers and hands.