VT400 is a Made In India Quadcopter frame. It is a 450mm frame which has high strength and more durability. PCB is made of Glass epoxy material which reduces vibration of Motors and protects electronics from malfunctioning. The Quad copter frame has 4 arms i.e. 2 orange & 2 green. Orange arm shows the forward of the drone while the green shows the trailing part of the drone.