Specifications Ring Case Color: Clear size: External diameter7.7cm (2.95"), Internal diameter 6.5cm (2.56") Luminous color: Colorful Quantity: 12 Pack Wonderful party supplies Your just turn on /off by the module, bright lights will bring you a wonderful night and a colorful party. Health and non-toxic Bracelets are made of environmentally friendly materials, brand-new polypropylene materials, healthy and environment friendly, safe for children. Great for night event The color is noticeable that can offer extra visibility when you are in darkness, and let you have a bright party in dark. Warning Keep away from children under 3 years of age. Do not submerge in water or any liquid.