Features: Safe Material. The flute cups are made of food-grade plastic, with no harmful effects on human health. Safe for drinking. Liquid Activated. Two small pins at the bottom activate the LED when liquid is poured into the cup; the light turns on when filled and turns off when empty. Creates a beautiful effect as the colored light reflects off the sparkly crystals embedded in the base and shines through the beverage. The LED operates for up to 24 hours total using CR1220 button batteries. Can also be used as a regular champagne glass. Eye-Catching. A fun novelty item ideal for parties and social gatherings. Attracts attention in well-lit rooms and stands out especially in low lighting, particularly in multi-color mode, adding a vibrant and festive atmosphere. Perfect Gift. These colorful LED champagne glasses create a celebratory mood and offer a decorative way to serve wine or champagne. Suitable for club decor, Halloween, home decor, bar events, birthday parties, and other celebrations. Note: Actual color may vary slightly from the image due to differences in monitor displays and lighting conditions. Specification: Material: PS Size: 6.8 x H18 cm, Caliber 5.2 cm Volume: 150 ml Includes: 6 x Cups