1. Usb Communication, Sound Pickup Function, Software Rotation, Brightness Adjustment 2. Audio Themes, Customized And Mic Pickup 3. Dynamic Theme Editing, Self-Developed Software, Easy Operation, Visual Editing, Real-Time Preview 4. Visual Theme Editor, Easy To Operate, What You See Is What You Get, Real-Time Preview And Editing Layout 5. Comprehensive Monitoring Without Blind Spots Type: Display Model: USB Drive-Free Water-Cooled Chassis Secondary Screen Resolution: 480*480 Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use type:A: 2.8-inch water-cooled secondary screen-black shell Colour:As Shown Material:ABS Package Contents: 1 x Display 1 x Magnetic Stand 1 x Double-Sided Tape 1 x Memory Card 1 x Usb Cable 1 x Connection Cable 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.