1.Size and weight: chain length 23cm, width 0.3cm, pendant width 1cm; 8g. 2.Material and technique: alloy, rose gold-plated. 3.Function: radiation protection. 4.Features: fashion, simple and stylish design, great workmanship on dome polished surface and high polish smooth inner face, bring you both the elegance and comfort; perfect, durable and comfort fit. 5.Applications: this ring is a perfect gift for men or women, especially for boyfriend, husband, dad, son or friends on Christmas, birthday, Valentines Day, anniversary day. 6.Jewelry care: storing in jewelry box, avoiding contact with oily hard substances and chemicals, cleaning with warm water, wiping with soft cloth and do not wearing when bathing.