ETA Valgranges Caliber A07.161

Manufacturer	ETA
Caliber Number	A07.161 Valgranges
Movement Type	Automatic, self-winding mechanical
Lignes	16 1/2”’
Diameter	36.6mm
Height	7.9mm
Jewels	24
Power Reserve	48 hours
Beat Rate	28,800, 4Hz
Anti-Shock System	Incabloc
Regulator	Etachron
Functions	Central hours; central minutes; central sweeping seconds; second time zone (GMT)
Hacking Seconds?	Yes
Country of Manufacture	Switzerland, Swiss made
Known Models	Porsche Design Worldtimer 6750

This example of the ETA Valgranges caliber A07.161 was found in a Porsche Design Worldtimer. Other watch sites state that this watch model is powered by an ETA Valgranges A 07 111 with Eterna module. However, the actual movement inside is stamped ETA A07.161 (A07.111 is the base).

Variations:

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

Caliber Commentary:

“Its ETA Valgranges calibre A07.111 movement that was introduced in order to replace the ageing (and also iconic) ETA 775x family of chronograph calibers (and also to better suit modern “larger” wristwatches) is heavily modified by Eterna’s engineers and is hidden inside a huge case whole 45 millimeters in diameter and 16.8mm thick.” (Source: http://www.worldwatchreview.com/2008/11/13/porsche-design-worldtimer-p6750-now-in-rose-gold-case/)

Macro Gallery:

Watches with this movement:

Additional Resources:

• All about Valgranges movements
• Watchuseek Thread: Watches utilising Valgranges movement