- Brand: Jaeger-LeCoultre
- Circa: 1960
- Model: Memovox
- Reference: E855
- Calibre: 815
- Movement: Bumper Automatic
- Material: 18ct yellow gold
- Features/complications: Mechanical alarm
- Dial: Gold dial with inner minute track featuring gold/onyx baton hour indices and gold baton hands and centre seconds with date aperture at 3 o'clock
- Case dimensions: 36 mm
- Bracelet/strap: Leather strap
- Accessories: N/A
- Web reference: 1715
Essay: Jaeger-LeCoultre launched the Memovox in 1951. The name Memovox is an amalgamation of two Latin words: Memor (remembering) and Vox (voice), translating to “the voice of remembering”.
The first Memovox series were produced with a manual wound Calibre 489 which encompassed two separate crowns which allowed the user to manually wind the and set the alarm and timekeeping of the movement separately.
A second series of watches were introduced in 1956 using an automatic Calibre 815 thus making the first automatically wound alarm wristwatch. The alarm function also operates separately from the rest of the movement. Since there is no on/off switch for the alarm, it is always set to wound and therefore the automatic winding mechanism would mean the alarm was always set within 12 hours of the watch when running.