Features: Safe Material. The flute cups are made of food-grade plastic, there are no adverse effects on human health. Safe for drinking. Liquid Activated. Two tiny pins on the bottom to activate the LED, LED lights up when liquid is poured into the cup , lights off once the cup is empty. A pretty effect as the colored light reflects off the sparkly crystals embedded in the bottom of the glass, then shines through the liquid in the glass. The LEDs life can last for 24 hours in total with CR1220 button batteries. It can also be a normal Champagne glass. Eye-Catching. A nifty novelty item for parties and any kind of get-together, a huge access to be a hit at a party. In a lighted room, it will draw attention, but in dim light, it is a real eye-catcher, especially in the multi-color mode, really pretty and added a fun vibe. Perfect Gift. Champagne glasses make for an awesome gift Colorful LED Cups create a festive mood and a decorative way to serve champagne or wine, Perfect for club decorations,Halloween decorations, house decoration uses, bar birthday decorations, parties decorations, characteristics, Note: Actual color may be slightly different from the image due to different monitor and light effect. Specification: Material: PS Size: 6.8*H18cm, Caliber 5.2cm Volume: 150ml includes:6 x Cups Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 442 hours Hope you have a pleasant shopping experience!