The Steel case and bracelet of our watches are manufactured by stainless steel 316L.
All watches are tested by using ISO2281 for the water resistant.
IP plating including IPRG / Gold / Black / Gun colors are tested by artificial sweat test and abrasion test based on ISO 3160-2 standard. The colors can be durable for one year or above.
All our straps are using genuine leather. Gent straps can bear a minimum pulling force of 20kg while lady straps can be pulled by at least 15kg. They are also tested by dry friction, wet friction and ultra-violet light tests to make sure the color will not fade out within a year.
All metal bracelet goes through traction-torsion test. It must not be broken, elongated or deformed after the test.
Glass is tested using steel ball. The standard is 64cm falling height with crystal unbroken.