Navy long-sleeved knit sweater with a Christmas pattern, featuring reindeer and bead embellishments. - Color: Navy - Design: Christmas pattern (reindeer, trees, hearts) - Sleeve Length: Long sleeve - Material: Knit - Embellishments: With beads Sweaters with an earphone jack that light up (LED illumination) are mainly "Light Up Ugly Christmas Sweaters" for the Christmas season, or exist as functional apparel. Light-Up Christmas Sweater LED lights are embedded in the chest area, etc., and blink with an internal battery box. It has an illumination-like design, and I think it will light up when you connect the wires. I think it's unique and you won't see it on others. Thank you for viewing.