Cal. A07.231 is an oversized automatic chronograph movement produced by ETA in the Valgranges family from 2005 through 2021. Along with the similar Cal. A07.211, it was one of only two chronograph movements in the Valgranges line, which is odd since it was based on the Valjoux 7750 automatic chronograph. It was also the most popular in terms of the number of watch models that used it, but it was withdrawn from the market after 2021 as ETA stopped selling movements outside the Swatch Group.

The Valgranges A07.231 is essentially identical to the venerable ETA 7753 but on a larger main plate. The movement also lacks a day complication, though it does retain the date at 4:30. The similar Valgranges A07.211 features subdials at 6-9-12 and date at 3:00 like the 7750.