Features: This LED screen testing device features enhanced 4K image connectors for optimal video transmission during inspection, perfect for LCD screens and monitors to efficiently check display execution with bright picture detail. Provide multiple testing modes including color calibration, brightness comparison, and resolution verification up to 3840x2160, ensuring displays meet industry standards and helping users identify potential visual issues. The adaptable flat cable allows easy bending and installation while minimizing data interruption, ensuring stable connectivity without twisted wires for convenient operational. Compared to typical round cables, this flat wiring solution enhances flexibility and reduces disruption risks, maintaining consistent data transfer with robust materials made for repeated technical use. Designed for display manufacturers, repair centers, and electronics specialists, this testing equipment delivers precise analysis for LCD panel maintenance, troubleshooting, and quality checks in various settings. Specifications: Component:Plastic Size:Approx.10cm/3.94inch Package Includes: 1Pc Screen Testing Tool 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.