Ow - Selectron Calculator

Standing its ground as the Breitling Navitimer’s historical challenger, the Selectron’s slide rule enables its user to perform simple arithmetic operations, conversions and other calculations making it extremely handy in a time before calculators.

As with all OW models, its screw-down back and crown guarantee that it is both extremely robust as well as water-resistant.


Reference :


Year of manufacture :


Année de fabrication :


Dimensions :

1.5 inches

Case :

stainless steel, screw-down case back, screw-down crown, slide-rule rotating bezel

Water resistant :

660 ft/20 ATM

Movement :

Mechanical 17R, Hours Minutes Seconds Date

Value :

2,700 CHF, mint condition

Overview: Ow - Selectron Calculator