1ST3600 Mechanical watch movement replacement part, highly precise and ensure accurate time display of mechanical watch. 2Watch professional maintenance replacement movement, about 3.8cm / 1.5in diameter and 5cm / 2in maximum length. 3Alloy material is durable and not easy to deform, can effectively resist oxidation and rust, long service life. 4Small and convenient, easy to carry and convenient transportation, exquisite workman, no scratching for watch. 5Professional watch repairing tools, suitable for repairmen and amateurs to save expensive repair costs.Item Type: Watch Movement Material: Alloy Diameter: Approx. 3.8cm / 1.5in Maximum Length: Approx. 5cm / 2in (manual measurement, please allow a little error) Color: Silver Applicable People: Watch professional maintenance personnel Application Scenario: Watch maintenance replacement movement 1 x Watch Movement 1 x Gear 1 x Screw 2 x Fixing Tool 1 x Yellow Gasket