Ring size measurement method: 1. Wrap a piece of paper around the finger you want to wear 2. Mark the intersection with a pen 3. Measure the length of this piece of paper, which is the circumference of the ring (unit: mm); environmental protection Material: Titanium steel, also known as surgical steel, is recognized by the medical community as non-toxic and harmless to the human body, anti-radiation and anti-corrosion. Once only used for aerospace, also known as "space metal" IP vacuum furnace gold plating is by no means surface gold plating, allowing rose gold to be directly integrated with titanium steel. The allergy rate is as low as 925 sterling silver, and very few people with allergies can wear ear acupuncture after drinking alcohol. Know the material before buying, because there are too many alloys competing with me, and it will change color after wearing it for a few weeks, and I can always be with you.maintain:Do not wear jewelry for bathing, beauty, and laundry, so as to avoid oxidation and discoloration when jewelry is in contact with alkaline products. Avoid placing jewelry with chemicals, which can cause jewelry to darken or darken. When accessories are not worn or worn, be sure to dry them thoroughly with a glasses cloth before storing to avoid moisture discoloration.