Description: DIY Speaker Kit: dual channel small speaker, electronics DIY soldering project practice solder assembly. The power supply can be powered by a mobile phone charger or a computer 5V power supply. The sound quality is better when using a 2A power supply. Function: 3.7-5V DC power supply to automatically play music, 3W + 3W stereo power for amplifier, support,support power off memory, U disk to play music, can be powered by a power bank. Operation: Turn on the of the mobile phone, scan the device directly, find inchXC046 inchand click connect. After disconnecting,it will automatically switch to U disk. Wiring Description:The white terminal is connected to the speaker and the red terminal is connected to the power supply. Please strictly follow the product instructions, improper use and wiring will cause normal use or damage. Simple Installation: Easy to install, all parts need to be installed by yourself. You only need to connect the cable and assemble the sound control board. Specification: Material: PC Total Size: Approx. 106x62x66mm/4.17x2.44x2.60 inch Channel output: 2 channels Output power: 3w+3w Power supply voltage: DC 4.2-5V(Exceeding 5v will damage the module) Rated current: 1.5A-2A Package Includes: 1 Set Speaker Parts (with Clear Packing Box) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!