①. Composed of Bluetooth stereo module, power amplifier chip, music spectrum, 132 colorful LED and other components ②. It can be connected to Bluetooth and supports stereo output ③. Equipped with a 3.5mm audio signal input port, supporting wired connection to devices such as computers and mobile phones ④. When inserting an audio cable, it automatically switches to the audio cable signal and is not affected by Bluetooth sound interference ⑤. Music spectrum display, rich colors, and beautiful music ⑥. Product Name: LED Bluetooth Audio Kit ⑦. Working voltage: DC5V ⑧. Bluetooth button operation instructions: Short K1: Turn Bluetooth function on or off (Turn Bluetooth function on automatically when powered on); Short K2: Previous song; Long K2: Volume-; Short K3: Next song; Long K3: Volume+ ⑨. Function Introduction: A dedicated audio spectrum display driver chip with built-in multiple decoding algorithms, and a memory function that can permanently maintain user set parameters ⑩. Colour: Photo Color ⑪. Material: plastic ⑫. Package Contents: 1 x DIY Bluetooth Speaker Kit (Only the above package content, other products are not included) ⑬. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm