Seiko High Torque Continuous-Sweep Mini Quartz Movement features a quiet quartz motor. The continuous, smooth sweep motion removes any ticking noise to distract or interrupt you. The motor featured is a high-torque motor. Case: 2 1/8" X 2 1/8" Shaft: Large threaded portion = 5/16" Overall shaft length = 5/8" I-shaft hands are not included and must be ordered separately....