K laser pulse energy smart watches are tested several times a day, 3-4 times a day, and the effect can be achieved in one or two months. Pulse watch is a shock wave produced when the electronic crystal vibrates. The timely crystal vibrates as many as 32,768 times at a time. Whenever counting, the circuit sends a message to move the second hand forward for one second. Because the timely vibration is quite regular, the error rate of one day will not exceed 1 second.