Solo,The Smart Drone, 3-Axis Gimbal for GoPro. Model #GB11A Price: $399.99 (as of 05/01/2018 15:01 PST- Details)

3-axis gimbal ensures solid GoPro performance. NOTE , the gimbal is only good for 3dr drone, not suitable for other brands
Capture smooth and fluid HD footage every flight
Stabilized to within 0.1 degrees of pointing accuracy.