ETA Valgranges Caliber A07.171

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Brand ETA
Caliber Number A07.171 Valgranges
Movement Type Automatic
Size  16 1/2”’ (36.60mm) x 7.90mm thick
Jewels 24
Power Reserve Unknown (add in the comments below)
Vibrations Per Hour 28,800, 4Hz
Shock System Unknown (add in the comments below)
Features Hours, minutes, seconds, second time zone (GMT)
Hacking Seconds Yes
Country of Manufacture Switzerland
Known Models Invicta 12878

According to the ETA site, the caliber A07.171 is equipped with “Regulator system ETACHRON with finetiming device.”

Other variations of this movement include:

  • A07.111 calibre: hours, minutes, seconds, date
  • A07.161 calibre: hours minutes, seconds, date, power reserve
  • A07.211 calibre: hours, minutes, seconds, date, chronograph
  • A07.171 calibre: hours, minutes, seconds, date, 24-hour hand, time zone
Is the ETA Valgranges Caliber A07.171 any good? Share your opinions, experiences and watches below... Remember to keep comments respectful and follow our community guidelines.

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William Kee
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William Kee

Power Reserve: 46 hr

Dan T
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Dan T

my new longines avigator with the L704.2 movement has a loud rotor noise and it wobbles like a 7750, I read in a blog that it actually comes from a family close to the 7750, so much for the wobble, but it is noisy, anyone out there ever come across this with longines watches, or that particular movement, thanks