Junghans J80; Junghans 680.70

Caliber Junghans J80; Junghans 680.70

sub second; no shock protection; 15 Jewels


Junghans J80; Junghans 680.70; 15 Jewels; Front


Junghans J80; Junghans 680.70; 15 Jewels; movement


Junghans J80; Junghans 680.70; 15 Jewels; back

  • Type: mens wristwatch
  • Manufacturer on dial: Junghans
  • Trademarks/imprint: Junghans; Back: J and UNGHANS in eight-pointed star; BODEN EDELSTAHL
  • Number of jewels: 15
  • Escapement: lever escapement
  • Balance staff: two-legged screw balance
  • Shock protection: no
  • Features: escape wheel cock separat
  • Beats per hour: 18.000 A/h
  • Dimensions: 10.5“‘
  • Production period: 1931 - 1938
  • Functions: hand winding
  • Display: hour, minute, sub second at 6
  • Dial: black dial with luminous figures (Radium), minute lines (railway); sub second at 6
  • Hands: Lance
  • Second hand: thread with a small counterweight
  • Case form: rectangular
  • Case diameter (mm): 32 mm
  • Case material: brass, chromed
  • Back: Steel; pressed
  • Bracelet: no


The movement shown is generated in the 15 Jewels version. There are used saphires instead of rubins.

Caliber overview


Caliber classification Junghans J80, Junghans J81

Again, I find it difficult in some caliber allocation. With the above list I tried to provide some clarity on the different caliber and their designations.

The movements were produced at the same time with or without divided wheel bridge. There are versions with 7, 11, 13, 15, 16 and 17 jewels.

There's caliber Junghans J80 with various imprints on the bridge: J80S; J80M (was probably Meister).