Fortis is a Swiss watchmaker. The company name means "strong" in Latin. Founded in 1912 in Grenchen, Switzerland by Walter Vogt.
Based on the achievements of the delivery to the Russian Air Force and the British Air Force, the Fortis Official Cosmonauts Chronograph is certified as a standard astronaut instrument of the Mir Space Station Project. Fortis and Omega Speedmaster Professional are only allowed to wear outside the atmosphere. The average sales price for Fortis is ฿45,295.

• B-42(5)
• B-47
• Colors
• F-43 Flieger
• Flieger(1)
• Marinemaster
• Square