The ETA caliber A07.171 is a Swiss made automatic watch movement with 24 jewels. This movement is capable of displaying a second time zone thanks to the centrally located GMT hand. This caliber is based on the ETA 7750 framework and began production in 2006.
Other variations of the A07 family of movements include:
A07.111 calibre: hours, minutes, seconds, date
A07.161 calibre: hours minutes, seconds, date, power reserve