Blinking LED Balloons, Prosensor&reg; Party Wedding LED Glow Balloons Flashing with Different Colors (10 pcs) - 12 inch Great for Parties and Birthdays Bright LED light in each balloon. simply pull the tab to start the LED light shining Party Wedding Festival Decoration--Make you party or prom fantastic and cool The LED lights will last for up to 48 hours of continued use, and the batteries are replaceable Each package includes 5 fully assembled balloons, total 10 pcs. When helium is used, these high quality balloons will stay afloat for up to 10 hours.