Bring your beverages to life with our Sci‑Fi Pulse Light‑Up Drink Coasters, engineered with a pressure‑activated LED system that responds instantly when a drink is placed on top. Each coaster measures 3.5" x 3.5", making it the perfect size for most glasses, mugs, and cocktailware. Once activated, the coaster begins a mesmerizing color‑changing sequence, shifting from blue to white before fading and pulsing back to life in a continuous loop. The effect creates a futuristic glow that enhances tabletops, bar counters, and party décor. Each coaster comes ready to use with two replaceable CR2032 batteries, ensuring long‑lasting illumination throughout your event. Durable, lightweight, and visually striking, these coasters are a must‑have for sci‑fi themes, glow parties, and nightlife environments.