Antenna Signal Booste Antenna Is Not Included And Needs To Be Purchased Separately The Signal Is Stronger And More Stable, Reducing Accidents And Making Flying . Used With Extended Range, The Signal Gain Effect Is More Obvious Extended Range, Suitable For Mini/2/Air/Spark Type:Extended Range Function:Enhance Signal Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:Black Material:Plastic+Copper Package Contents: 1 * Remote Control Range Extender 1 * Cleaning Cloth 1 * English Manual 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.