Qhsgdbgem mechanical Watch Movement calendar Sync Module Single function with date at 3 o'clock; designed for upgrading existing watches and reliable operation.

This automatic mechanical watch movement is designed for 8205 and 8215 series and is a direct replacement for 2813 movements, ideal for watch repair, modification, and upgrading. Self-winding automatic mechanical movement that uses wrist motion to power the watch. No battery required, ensuring a traditional mechanical watch experience with continuous and stable timekeeping. Features a practical single calendar function with the date window positioned at 3 o'clock, providing clear and convenient date reading suitable for everyday use. Standard 3-hand configuration (hour, minute, second) for accurate time display and easy readability. Suitable for a wide range of watch designs and styles. Designed as a for 2813 movements, making it suitable for refurbishing, repairing, or upgrading existing watches that originally used 2813 movements.