Take to the skies with unparalleled agility and weightlessness. Item: Air65 Brushless Whoop Quadcopter. 1 Air65 Brushless Whoop Quadcopter. This all-in-one solution seamlessly integrates FC, ESC, OSD,Serial ELRS 2.4G RX and Onboard 5.8G 25mw~400mw VTX, while weighing just 3.6g.