Features 1：High hardness, scratch and wear resistance, bright and transparent
Features 2：The hollow shape, which is integrated with the inner mechanical art,
can see the beating of the machine, which stimulates the obsession
and imagination of the machine.
Features 3：The watch has undergone high-precision production and strict waterproof testing.
Daily hand washing, rain, and swimming will not affect the use of the watch.
Features 4：50 meters deep waterproof
Features 5：Diamond Knife Craft
，crystal lid glass