The largest of the transformable mecha.
This SDF-1 is around 16 inches tall and weighs quite a bit, considering that it is made mostly of plastic.
The toy pictured is a Bandai released SDF-1 with a Takatoku Prometheus and Main Gun/Reflex Cannon tips (note the yellow launching mechanisms).
The Daedalus and Prometheus are removable and they have small wheels on their undersides.
The SDF-1 has many hatches that can be opened and three sets of fold down wheels that can be used when it is in ship mode.