1. Audio Theme, Dynamic Editing Theme, Rich Theme Resources, 2. Sound Pickup Function, Music Visualization, Supports Wav Audio File Pickup And Microphone Pickup 3. Adopt Aluminum Alloy Shell, Sturdy And Durable, And The Overall Texture Is More Textured 4. Video Dynamic Background, Thanks To The High-Performance Processor, The Secondary Screen Of The Chassis Can Realize Ui+Video Background Function 5. The Operation Is Simple And Easy To Use, No Complicated Operations Are Required, The Interface Functions Are Clear And Clear, And It Supports Light And Dark Theme Switching. Specifications: type: Welding Due to different batches, the appearance, color, and printed words of the product may vary, which does not affect its use. Material: PCB colour: As Shown Package Contents: 3 x Development Board Only 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.