Here's why:
* Realism: The movie aimed for a gritty, realistic portrayal of espionage. Specifying a particular model could feel forced or unrealistic.
* Function over Form: The monoculars were a tool for Jason Bourne to observe and gather information, not a flashy piece of tech. A simple, functional design would be more appropriate.
Consider these factors:
* Size and Portability: The monoculars needed to be compact enough to be easily concealed and carried.
* Magnification: The film likely used monoculars with moderate magnification, enough for Bourne to observe details but not so powerful that they would be too bulky or unwieldy.
* Durability: Espionage tools need to be robust and reliable, so the monoculars likely were made from sturdy materials.
Without more information from the production crew or official props list, it's impossible to determine the exact model of monoculars used. However, they would have likely been a simple, practical model chosen for its function and realism.