1. Composed of Bluetooth stereo module, power amplifier chip, music spectrum, 132 colorful LED and other components2. It can be connected to Bluetooth to and supports stereo output3. Equipped with a 3.5mm audio signal input port, supporting wired connection to devices such as computers and mobile phones4. When inserting an audio cable, it automatically switches to the audio cable signal and is not affected by Bluetooth sound interference5. Music spectrum display, rich colors, and beautiful musicProduct Name: LED Bluetooth Audio KitWorking voltage: DC5VBluetooth button operation instructionsShort K1: Turn Bluetooth function on or off (. Turn Bluetooth function on automatically when powered on)Short K2: Previous songLong K2: Volume-Short K3: Next songLong K3: Volume+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.Colour:Photo ColorMaterial:plasticPackage Contents:1 x DIY Bluetooth Speaker KitOnly the above package content, other products are not included.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.