Feature: 1. Soldering Practice: This kit is perfect for developing your SMT soldering skills, as well as for learning basic electronics and circuit principles. 2. Unique Design: The shell is made of 6 pieces of high transparency acrylic splicing, exquisite and beautiful, before splicing to remove the brown protective film. 3. Learning and Exploration: While DIY making, you can discover how the speakers work and create a safe environment for your entertainment. 4. Making Fun: A cool project that is fun and challenging to make your own Bluetooth speaker, suitable for welding connection and DIY production teaching training. 5. Easy Operation: The Bluetooth module board is pre soldered, all you need to do is solder the spectrum kit, connect the wires and assemble the case. Specification: Item Type: DIY Bluetooth Speaker KitMaterial: Acrylic, PCB.Power Supply: DC5V (cell phone charger/5V adapter/power bank) Loudspeaker Chip: LM386 Audio Input: Bluetooth or audio input Auxiliary Function: Level indication (spectrum function) Speaker: 5W 4 ohm After electricity, cell phone search for bluetooth name M18, connect to bluetooth to play music, also can be external 3.5 audio cable to play music. Bluetooth Indicator Light: When Bluetooth is not connected, the indicator light flashes fast; When Bluetooth is connected, the indicator light is long; When Bluetooth is playing, the indicator light flashes slowly. Package List: 1 x Audio1 x Power Cord Note: Spare parts need to be assembled by yourself