From a 1980 Kenner in-package catalog:
"An exciting replica of BOBA FETT's Spaceship. Carry a simulated HAN SOLO up the ramp into the cargo hold, place BOBA FETT in his cockpit, adjust his seat from landing to flight position and SLAVE I is ready for lift-off. The wings move freely unless you lock them with the stop button for flight control. The movable, clicking laser cannons protect SLAVE I from any pursuing ships. Remove the side panel and the sleek craft holds 3 additional Action Figure passengers. Simulated frozen HAN SOLO included. Action Figures sold separately. Available spring 1981."
The novelty of this ship was that it came with a Han Solo frozen in Carbonite accessory. (This differs from the accessory included with the Power of the Force figure.) Other than this, the ship was rather plain, and was one of only a few ships to be released without the electronic laser sound effect.
Some ships came packaged with a special cardboard backdrop, but these are quite rare today.