This controller is made for the DJI Spark only. It allows you to fly you Spark up to 1.2 Miles away. It can connect to your mobile device wirelessly to display live footage through the DJI GO 4 App. The folding clamps allow you to insert your device for a nice display. The controller can work for 2.5 hours on a full charge. Although not required, the Spark controller is highly recommended.
Thanks for looking!