Description Features: 1. Application: the adjustable retro dragons ring can be worn in most occasions such as theme party, daily use, decorating your everyday style and you can also present them as gifts to your family and friends 2. Color detail: Cool retro style dragons shape; Wearing this ring, you can be cool and elegant, showing your personality 3. Material detail: made of copper, sturdy and durable, anti-rust and anti-corrosion. 4. Unique: Glow in dark, it shines after absorbing light 5. Size: Adjustable opening, fits most people, unisex design, great gift for men, women. Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow slight deviation due to manual measurement. Specification: Material: Copper Size: one size, adjustable Before adjustment: Inner diameter 18mm Introductions: Luminous light is not a natural luminescence, but a physical characteristic. It shines after absorbing light. It absorbs sunlight, ultraviolet rays, sunlight, and flashlights. Strong light exposure time is about 10-20 minutes. The longer the irradiation time, the brighter the night light will be, and the duration is about half an hour. Wait for the light to dim before irradiating with light, which can be used repeatedly forever (the purple one needs to be irradiated longer) Remarks: Luminous beads are made by hand, there will be water hole defects, please understand includes: 1 x ring