Features: Selected from high transparency acrylic, it is beautiful, and can effectively resist daily wear and scratches. Specially tailored for P4 development board. The specific model and appearance can be determined according to the pictures. Ensuring that all interfaces, buttons and LED indicators can be easily accessed. The shell takes into account the heat dissipation requirements and has good ventilation holes to keep the equipment at a stable temperature during operational and prevent overheating. The simple structural design makes it easy for users to assemble and disassemble without special tools, which is convenient for use and maintenance. Clear acrylic displays internal circuits and components, which enhances the attractiveness of the product and is suitable for display and demonstration. Specifications: Component:Acrylic. Size:Approx.35x105x76mm/1.37x4.13x2.99inch Package Includes: 2 Optional Package: Package 1 Include:1 Set Acrylic Protective Case Package 2 Include:2 Set Acrylic Protective Case note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.