[" brand new and high quality Features: A machine test tool specially made for Mavic Mini UAV signal line. The signal lines can be tested through the lights on the test board. If all the lights are on, the signal line is intact; if some lights are not on, there is a problem with the signal line. Great replacement repair accessory spare part for broken, worn-out one. Good compatibility and fits perfectly. Specifications: Main Material: Printed Circuit Board Color: Purple Size: Approx. 9.5x3.8 for cm/3.74x1.49 inch Note: Only signal line test tool, singal line and charging cable are not included. Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you mind. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1 Piece Signal Line Test Tool"]