The clock of the core of the quartz clock is a step by step, and there is a tick at the time of walking. The clock product market is more common in the middle of the second quartz clock, and the relative cost of the second is low and the process of making the core is not too complicated. Now with the domestic Heng Rong clock HR1688 quartz clock engine as an example to share with you the choice of quartz clock core experience, the HR1688 quartz clock core its advantages are accurate because of the use of frequency: 32.768KHz national standard quartz crystal oscillator (daily positive and negative difference in 1 second), and the core motor coil to be more stable in such work output And low power consumption (1 batteries can be used for more than a year). Another is that the gear set inside the core should be glossy and wearable, and the ABS plastic material should be selected (excellent low temperature impact resistance). Dimensional stability. Electrical properties, wear resistance, etc. The shell of quartz clock movement is also best to use ABS plastic material to withstand compression and fall, which is conducive to transportation and export packaging.