LOHOME LED Glowing Cup, 4 Pack 8 Oz LED Light Up Flashing Martini Cocktail Glasses Blinking Wine Champagne Glow Cups Barware Stemware (4, Colorful) This super-bright LED Drink Ware is sure to liven up any party or event! Made of a high quality, safe, clear acrylic; with replaceable 3*AG13/LR44 batteries. Size: Dia. 10.5cm/4.1 inch; High: 7.5cm/3 inch. Simple push-button on/off mode selection switch. Flickering in the darkness with dreamlike feeling, enjoy different drinking moment with this vivid mug. Perfect for Cocktail Parties, Weddings, New Year's Eve, Bars & More!