Celebrate milestones and other special occasions with Glass Fusion's serve ware and Pop-Ins embellishments. Just pop this Pop In in a Glass Fusion Pop In base, such as candy dish, bowl, platter, or serving board, for the perfect Happy Birthday themed party dish. This pop in uses button cell batteries and LED bulb which are included. Sentiment: Inches Happy Birthday". DEMDACO Lit Happy Birthday Cake Blinking Pop In by Glass Fusion Collection. Made of Plastic and LED Light, Measures 2.5 Inches w x 4 Inches h. Hand wash only. Not intended for microwave.