The Japan VK63 is a ​hybrid mechanical quartz (mechaquartz) movement. It is a chronograph movement that uses quartz technology for the main functions of the watch and a mechanical module for operating the chronograph.

The crystal is made of curved synthetic sapphire crystal. The hardness of sapphire is second only to diamond, not afraid of pinprick and breakage, high temperature resistance and super anti-corrosion ability, making your watch more durable, scratch and refraction resistant.

The 316L stainless steel case and strap are immaculate and highly polished. The four lugs fit comfortably on the wrist. The crown on the right side is a screw-down crown that needs to be unscrewed downward before the calendar and time can be adjusted.

In addition to being worn daily to resist hand and face splashes and rain, the 100m waterproof watch can be worn for washing cars, showering (cold water only) and swimming. Do not wear your watch while taking a hot shower. This is because the watch not against water vapor.

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.

Bezel to bezel is 20mm. case to case is 42mm. strap width is 20mm and length is 220mm. watch thickness is 14mm. package contains Watch, Original Box , Instructions , Clean Cloth, Bracelet Adjuster. The package includes Watch, Original Box, Instructions, Clean Cloth and Bracelet Adjuster.