CYOEST DIY Bluetooth Speaker Box Kit Electronic Sound Amplifier - Build Your Own Portable Wood Case Bluetooth Speaker Sound - Science Experiment and STEM Learning for Kids, Teens a

【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