Features: Luminous color: red, yellow, blue, green, white, colorful (red, blue, green, yellow, white, mixed). Flashing LED light is simple to use. Suitable for helium or air filling, inflating like a normal balloon. Each balloon (blinking) can flash up about 12-24 hours (Bright mode in the first 6 hours). LED feature works best in dim/dark environments, you can dim your lights for its best performance. Vivid and stunning to match your occasion regardless of house party, birthday, or any other event. You can inflate the balloons to 12 inches (Maximum). Specifications: Material: plastic + aluminum Color: Transparent Single Product Size: 1.4*3.15*1.15CM (about) Light Source: DIP led Power: 0.02w Scope of Application: 12inch balloon Package Size: 15*10*1.5cm / 5.9*3.94*0.59in Package Weight: 90g / 3.17oz Package List: 30 * LED Balloons Lights