The APF M1000 was released in 1978. It's a Video game system cart based, comes with 2 non-detachables joysticks with a numeric keypad on each ones (look likes a mini-calculator with a joystick), has "Reset" & "Power" buttons on the unit. Only could be played on a Color TV only. This system seems to have been the pack-in unit with Imagination Machine.
The APF MP1000 was released in 1978. This system is basically the same as the M1000 model and both systems does come with built-in game called "Rocket Patrol".
Both of these systems had the ability to be expanded to the Imagination Machine & both can play each other cartridges.