I have the main unit.
type Children education computer
The ComQuest Plus — Educational Handheld
The ComQuest Plus was an educational handheld device — one of the category of dedicated learning tools that combined simple computing with educational content in a portable format. These devices targeted the educational market by offering quiz-based learning, vocabulary building, and mathematical exercises in an interactive format that made learning more engaging than traditional study methods. The ComQuest Plus represented the intersection of consumer electronics and educational publishing that VTech and other companies would develop into major commercial categories throughout the 1980s and 1990s.