Features: Dark Night LED Badminton Shuttlecock Birdies Lighting Brand New and High Quality. LED lights installed in the back of the cork, with On/Off push button. Material: goose feather, feather, SMD lamps, electronic products. Can be lit 20 hours, badminton emphasis than can be used in low-light night. Touch switch lights, IC control. Good durability and excellent performance. Specification: Color: Appearance white, (light color is three colors flash. light color is green light color is red) Item size: 90*63mm Net weight: 7g Package weight: 17g Packing content: 1 x LED Shuttlecock