The big pendulum clock movement, Is a large pendulum force Swing device and a quartz clock movement combination, Its force can swing over 50 g And the length of 60 mm hang widgets。 Quartz clock movement using a second grade movement, six to eight years of life, all through the CE, ROHS certification qualified. Movement: crystal vibration frequency of 32.768 KHz daily average difference: 1.5 v + 1 second/day, 24 ℃ movement Torsion the minute hand is suitable for use in the 220 mm long clock needle around for the best. Quartz clock movement The shaft length: 20 mm Machine core specification: 56 * 56* 16.5 mm Movement weight: approximate 24 g/PCS Packing quantity: 400 PCS/box Packing gauge: 40 * 36 * 38.5 CM