Swiss Technology Production STP 1-11

STP 1-11 is an automatic movement manufactured by Swiss Technology Production, essentially an ETA 2824-2 clone introduced in 2012. It shares the same wheel architecture as the ETA but uses a lengthened mainspring to deliver a 44-hour power reserve compared to the standard 38 hours. The movement is used by Zodiac in models such as the Astrographic, Sea Wolf, and Heritage, having replaced Ronda calibers in the brand's modern lineup. Fossil Group holds a 51% stake in STP, which remains in production.