Sinn Spezialuhren STP 1-11

STP 1-11 is an automatic movement manufactured by Sinn Spezialuhren. Introduced in 2017, it is based on the Swiss Technology Production STP 1-11 caliber and serves as an alternative sourcing option to the commonly used Sellita movements. The movement is not in-house, reflecting Sinn's practice of integrating externally sourced calibers into select limited edition models. It remains in production.