LED Light Rings for Halloween Decorations! Ghost Rings! Kids' Gift! Horror Accessories! Party Decorations! Glow-in-the-Dark Rings Finger Light Rings - Set of 50 (Random) ・Glowing Halloween Monster Rings! ・These rings sparkle in the dark and are eye-catching! ・Perfect for social media! ・Great for Halloween events and festivals! ・Recommended as prizes for night parties! Size: Adjustable (Suitable for children and adults) Lighting: ・On/Off switch for illumination ・Flashes red and blue when turned on ・Continuous lighting: 10-15 hours ・Battery replaceable 　Button battery: LR41 (Outer diameter 7.9 x Height 3.6mm) I bought these last year and never used them. They are new and unused, but have been stored at home. Please understand this before purchasing.