Innovative Light-Up Design: Features colorful LED lights integrated into a transparent EVA coaster that instantly enhances the visual appeal of any drink. The vibrant illumination highlights the beverage's colors, making it perfect for capturing stunning photos and elevating the overall drinking experience. Effortless Installation: Utilizes a peel-and-stick mechanism that attaches securely to the bottom of any cup within seconds. The built-in battery activates immediately upon removing the strip, allowing even first-time users to set up quickly without any tools or complicated steps. Versatile Lighting Modes: Offers three distinct light settings—flashing, slow flashing, and steady illumination—controlled by a simple one-click switch. This adaptability lets users customize the ambiance to suit lively parties, relaxed evenings, or festive celebrations with ease. Compact and Portable Form Factor: Designed with a thin, round profile that fits comfortably in bags or pockets after use. Its lightweight construction ensures it doesn't occupy unnecessary space, making it ideal for on-the-go events and spontaneous gatherings. Multi-Scenario Use: Perfectly suited for various occasions including bars, family get-togethers, birthday celebrations, and nighttime drinks. This practical accessory adds decorative flair while enhancing social environments with its eye-catching glow and user-friendly design. Item Name: Coasters Material: EVA, Electronic Components Power Supply: 2*CR1220 (Built-in) Features: Compact, Portable, Innovative Size Details: Diameter: 6cm/2.36" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Coaster