This is a 1935 digital clock.
Digital doesn't mean 'electronic'. Instead of using hands to point at numerals this watch displays moving numerals. It is called Heures Sautantes, "jumping hours" for its numeral-printed hour disc displaying hours in upper window. The clock was made by Jaeger, famous for its instrument clocks. The same company introduced a series of multi-purpose devices incorporating a desk/travel clock, thermometer and barometer - ADOS (Jaeger-LeCoultre Atmos - a very sophisticated piece of mechanical art, the closest thing to perpetuum mobile, priced like a luxury car, - is another story).
Jaeger ADOS Standard Barometre 1932
Jaeger-LeCoultre ADOS Standard Barometre 1940
Along with the ADOS series there were numerous varieties of ADOS Baby and Mignonette desk clocks - similarly styled, sans barometer & thermometer but with 8 days power reserve, just like in a cockpit!
Jaeger ADOS Baby 1935
Jaeger ADOS Mignonette 1935
To add to this businesslike luxury - some Jaeger / Jaeger LeCoultre desk and mantel clocks, with names and looks clearly ahead of their time:
Jaeger-LeCoultre Mantel Clock 1934
Jaeger Electric 1934
Jaeger Pendule Mysterieuse 1934
Jaeger-LeCoultre Chromed Clock 1935
Jaeger-LeCoultre Double Face 1935
Jaeger-LeCoultre 'Electronic' 1940
Jaeger-LeCoultre Desk Clock retailed by Rossello 1940
And, for a dessert, an early Atmos, 1940s: