【Bluetooth Speaker DIY Kit】No soldering iron, Our Kits include laser-cut wooden components,2 pcs Subwoofer 2 inch 4 ohm 3 w Full Range Speaker, Dual Channel Bluetooth Amplifier Board, Clear&Simple Instructions, It needs to be powered by 4 batteries (not include) when using, and it can be connected to the mobile phone or computer | 【STEM Education】By practicing assembling this STEM project, not only develops the hands-on of kids but improves their logical thinking, self-confidence, and teamwork ability. It’s perfect for school STEM science experiment to let students learn about Engineering and Circuit | 【Superior Sound Quality and Easy Connection】It's equipped with two high-definition speakers that accurately reproduce each note with rich, noise-free sound. You'll love how easy it is to connect your phone to the wireless speaker and enjoy your favourite music | 【Gift for Kids】All pieces in the DIY crafts kit are made of wood and scientific experiments safe materials. Once assembled, it plays beautiful music, making it perfect for at-home parent-child project. Ideal Gifts for boys girls 8+ year old. Why not give a gift where the kids can learn something | 【Why Choose Us】No matter what problem you encounter, please contact us and we will reply and solve your problem within 24 hours. If you have any questions, please don't hesitate to reach out, and we'll ensure your satisfaction