Gold Skeleton 27mm Watch Movement Single Calendar Automatic Mechanical Movement Adjustment Pendulum Watch 3 Hands for DIY Modder

Difference Between Ordinary Rotor and Reversible Winding Rotor:Reversible Winding Rotor: Can be wound in both directions (forward and backward).Ordinary Rotor: Winds only when turned forward.Compatibility: Rolex, Omega, Armani — single date modelsMovement Name: Thin Type Reversible Winding Skeleton (Gold)Diameter: 27mmThickness: 5.96mmFunctions: 3 Hands (Hour, Minute, Second), Automatic, 21 JewelsMovement Name: Thin Type Ordinary Rotor Skeleton (Gold)Diameter: 27mmThickness: 6.51mmFunctions: 3 Hands (Hour, Minute, Second), Automatic, 23 JewelsNote: This product has a diameter of 27mm. Please confirm it meets your requirements before ordering.