How to set up this quartz watch? Date: Pull out the crown to level 1, then clockwise rotate it to set date. Main Time: Pull out the crown to level 2, then clockwise rotate it to set time. Chronograph: Press "Start" directly, the hand starts running, press "Start" again, the hand stops running; then press "Reset", the hand returns to the 12 o'clock position Note: The seconds hand is the subdial at 6 o'clock, and the "longest" and "thinnest" arrow hands are the chronographs When you wear the watch, tighten the three crowns before contact with water to prevent water from intruding inside the watch Read more Classic Style This model was introduced in 1963 and was designed to meet the timekeeping needs of professional endurance racers. This iconic watch shares the performance and excellence sought by the racing world. More than fifty years after its creation, the model continues to occupy an important place in the world of sports chronographs and is constantly evolving 316L stainless steel strap IP-plated 316 stainless steel is wear-resistant and rough, durable. The surface is sanded and polished for an extraordinary luster. The soft and comfortable strap fits the wrist perfectly, and the strap can be freely attached and detached with several links according to the size of your wrist. The unilateral safety folding buckle is very stable and not easy to fall off. The crown shoulder guard design protects the crown from external forces. Multifunction Chronograph This is a functional watch that driving and speed lovers can dream of. The dial adopts a classic inverted triangle design and consists of three sub-dials, 24 hours, 60 minutes and 60 seconds. The timing button on the top right is (Start/Pause) and the timing button on the bottom right is (Reset to zero). There is a calendar window between 4 and 5 o'clock, with a tachymeter on the outer ring. Read more VK63 Mechaquartz Movement The VK63 is part of the hybrid mechanical quartz (mechaquartz) movement line. It is a chronograph movement that uses quartz technology for the main functions of the watch and a mechanical module for operating the chronograph.that the expected accuracy of this movement is less than +/- 20 seconds per month at normal temps.The battery life is about 2 years with normal operation. 100M Waterproof: 100 meters waterproof, can easily deal with emergencies, such as resistance to a small amount of hand washing, face splashes and rain, car washing, etc. But it should not be immersed in water or worn in a sauna or shower in a high temperature environment. Large temperature changes cause the shell to expand and contract internally. Shrinkage can create gaps in the rubber ring, allowing water vapor intrusion. Practical and Durable The watch is coated with a luminescent material on the dial scale and hands that allows the wearer to read the time or other information in the dark. When exposed to ultraviolet light, the luminous substance stores light energy and therefore can glow in low light conditions.The crystal is made of curved synthetic sapphire crystal.making your watch more durable, scratch and refraction resistant. Read more