Features 1、ALL IN ONE ELECTRONICS KIT: The speaker kit combines multiple functions into a sound experience. Add color to your music world with a unique 132 colored LED voice activated light design that creates cool lighting effects 2、MULTIPLE PLAYBACK OPTIONS: The welding project kit supports Bluetooth and 3.5mm sound input to play music. Bluetooth lets you easily play music from your phone; The sound cable interface is suitable for any device with a 3.5 mm sound output 3、APPLICABLE SCENARIO: Whether it is a family gathering, outdoor event or daily leisure, this Bluetooth LED spectrum speaker is nice for you to use 4、MAJOR CHOICE FOR SCHOOL EDUCATION: This electronic kit combines theoretical and practical knowledge, enabling students to apply their knowledge to practical scenarios and improve their welding skills. Teachers can use this project as part of their teaching curriculum to help students better understand the principles and techniques of welding 5、WITH USER MANUAL: The Bluetooth spectrum speaker kit provides detailed welding manuals in English. Rest assured that with the support of the manual, even novice welders can successfully complete the task Specifications: Item Type: Bluetooth Spectrum Speaker Kit Power Supply: USB Power Supply 5V (recommend to use 5V 2A quick charger) Input Voltage: 5V Input Current: Standby less than 10mA, full load not less than 500mA PCB Length: Amplifier Board: Approx. 91 x 34mm / 3.58 x 1.34in, Spectrum Board: Approx. 91 x 26mm / 3.58 x 1.02in Package List 8 x Electrolytic Capacitors 3 x 4 Pin Tactile Switch 1 x Bluetooth Sound Module 9 x 10k Ohm Resistors 1 x Gear Potentiometer 1 x Toggle Switch 3 x Chips 2 x Red and Black Wires 1 x 4 Pin Red and Black Wire 1 x Spectrum Circuit Board 3 x Black Key Caps 1 x User Manual 2 x SMD Resistors 2 x SMD Capacitors 1 x 100uF SMD Electrolytic Capacitors 1 x Extension Female Header 3 x SMD LED Lights 1 x SMD Tactile Key 1 x Bluetooth Amplifier Circuit Board 1 x 3.5mm Sound Jack 1 x Micro USB Data Cable 1 x 3.5mm Dual Tip Sound Cable 2 x Speakers 6 x Housing Parts 1 Pack of Screw Nut Accessories