Nepro “Memotron”

Swiss Watch Fair 1972 BF 208
Here is one of the important new designs at the 1972 Swiss Watch Fair the world’s first high-frequency (28,800 vph) alarm wristwatch with automatic winding and electronic buzz It emits a very powerful signal during 5 minutes. Furthermore, it is efficiently water-resistant. The movement, buzz mechanism and battery are housed in independent watertight caissons. Quick-change date setting calendar with ’stop second“system. (NEPRO”Memotron)