AerialTEK - Copper DJI Signal Booster, Range Extender and Antenna Booster using a Parabolic Process for extended range for DJI Phantom 3 and 4 including Inspire and wifi signal boster and amplifier COPPER PARABOLIC ANTENNA TECHNOLOGY SIGNAL BOOSTER: Foil process using concave copper concentrates and strengthens signal for amazing increase in range. SIGNIFICANTLY INCREASE RANGE EXTENDER: Flight controls and video signal are doubled in most cases. PERFECT FIT: For DJI Phantom 3 or Phantom 4. Inspire 1. Foldable. Folds up and fits perfectly in your DJI case. NO TOOLS NEEDED: Slide on and off. No tools or modifications required. THE ORIGINAL - This DJI antenna booster is the on all the others are pushing knock offs of. This is the original DJI antenna booster and other range extenders imitate.