1.Use high-quality materials with guaranteed product quality2.This is a practical and creative kit consisting of an MH-M18 Bluetooth audio module, an 8002 power amplifier chip, and peripheral components. After production, it can be connected to a mobile phone Bluetooth or played through an audio socket for signal transmission3.The 3.3W speaker has better sound quality under the action of its casing. Transparent shell design, the internal structure at a glance shows a sense of technology and achievement4.Bluetooth fast connection, automatic reconnection, stable transmission, and lossless playback5.Widely applicable, it can be used for teaching and training of electronic technology fundamentals and skills, as well as practical training for electronic enthusiasts and beginners, to enhance comprehensive practical abilitiesParameters:Working power supply: USB power supply 5V (recommended to use 5V2A fast charging head)Working voltage: 5VBluetooth operation:After the audio system is powered on, the phone searches for the Bluetooth name MH-M18 and connects it to play musicWhen Bluetooth is connected, the indicator light remains onDepending on the batch, the appearance/color of electronic components may be different from the picture, but the function is the same and does not affect use.type:With Shell/Without ShellColour:red+transparent/redMaterial:PCB+electronic componentsPackage 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.