High-Quality LED Light: The light-up necktie is made with premium cold light LED, perfect for club, wedding, dance, and party performances. Sound Activated: The tie features a sound-activated mode that makes the lights flash to the rhythm of the music, adding a cool and eye-catching effect to your outfit. Adjustable Sensitivity: The light controller comes with sensitivity adjustment, allowing you to easily adapt to different rhythms and music, enhancing the visual appeal. Concealed Controller: The controller is discreetly hidden at the back of the tie, maintaining a sleek appearance while providing easy access for turning on and adjusting the settings. Battery Powered: Powered by 2 AAA batteries(AAA batteries are not incloud in product), the tie eliminates the need for lengthy recharging, simply replace the batteries when needed to keep the lights shining bright. Notice: Since it contains electrical components, it cannot be washed and can only be wiped.