bout this item Warm White LED Balloons 10 sets: 10 PCS LED Lights,15 PCS 20 inch Clear Bobo balloons, 48 PCS glue dots, 1 PCS manual. Need two AA batteries for each string lights (Not included in the package)! Usage: Party supplies, birthday decorations, Christmas balloons. Can be used in any event, balloon arch kit, party decorations for women Size: 20 inches clear balloon(After inflated by helium tank for balloons at home),3 meters(10ft) LED lights. Pease use helium tank for balloons at home or air pump. Operating instructions: LED Light up Balloons is the best party supplies. Refer to the manual, use the inflation tool to fill these glowing balloons with air or helium, and then put 2 AA batteries in the battery box (batteries not included), the simplest installation operation brings the most brilliant and colorful party decoration.Please Don't blow up the balloon by mouth, use helium tank for balloons at home or air pump only!