Fortis Watch Aviatis Aeromaster Stealth F4020007. Good camouflage and yet no loss of readability is what the Fortis 655.18.18 Aeromaster Stealth offers. Held in a 42mm stainless steel housing that is powder coated with 2.5 micron black PVD, the ETA 2836 2 ticks on with reliability. As well as the time, the wearer can also clearly see the current day and date at any time. The Aeromaster Stealth is attention grabbing on the one hand thanks to its simple face display, and on the other hand due to the complexity in its details.