Signum Cero Bronze Forged Carbon infused with Lume, the dial is made from forged carbon and in this process Lume powder is added to the dial which mean at night with sufficient charge it will glow but only with sufficient charge by means of direct sunlight or using a UV torch. Each dial is completely unique therefore there will be variations in the composition of the carbon in the dial and so no two dials are the same, we have no influence on its appearance.
Furthermore the watch case is made of CuSn8 bronze and will start to develop patina within a short time which is completely natural and we have no control over this as its how the metal reacts with other natural elements in the air, this is by no means a fault but gives the watch even more unique character. 
You have a choice of two case sizes 39.5mm and 42.5mm with a choice of date or no date window, those who choose to have a date the date discs are also lumed. The Cero is powered by the very reliable Japanese Seiko NH35 (date) and NH38 (no date) Automatic movement.